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OG12 OG15 OG16	Every member of a certain club volunteers to contribute equally to the purchase of a $60 gift certificate. How many members does the club have?(1)Each member's contribution is to be $4.(2)If 5 club members fail to contribute, the share of each contributing member will increase by $2.
OG12 OG15 OG16	If $$x < 0$$, is $$y > 0$$ ?(1)$$\frac{x}{y}<{0}$$(2)$$y-x >0$$
OG12 OG15 OG16 OG17 OG18 OG19 OG20 OG2022	How many prime numbers between 1 and 100 are factors of 7,150 ?
OG12 OG15	What is the circumference of the circle above with center 0 ?(1)The perimeter of $$\Delta OXZ$$ is $$20+10\sqrt 2$$(2)The length of arc $$XYZ$$ is $$5\pi$$.
OG12 OG15	The figure above shows a circular flower bed, with its center at O, surrounded by a circular path that is 3 feet wide. What is the area of the path, in square feet?
OG12 OG15	The positive integer n is divisible by 25. If $$\sqrt{n}$$ is greater than 25, which of the following could be the value of $$\frac{n}{25}$$
OG12 OG15 OG16 OG17 OG18 OG19 OG20 OG2022	Beginning in January of last year, Carl made deposits of $120 into his account on the 15th of each month for several consecutive months and then made withdrawals of $50 from the account on the 15th of each of the remaining months of last year. There were no other transactions in the account last year. If the closing balance of Carl's account for May of last year was $2,600, what was the range of the monthly closing balances of Carl's account last year?(1)Last year the closing balance of Carl's account for April was less than $2,625.(2)Last year the closing balance of Carl's account for June was less than $2,675.
OG12 OG15 OG16 OG17 OG18 OG19 OG20 OG2022	If n and k are positive integers, is $$\sqrt{n+k} >2\sqrt{n}$$?(1)$$k > 3n$$(2)$$n + k > 3n$$
OG12 OG15	A fruit-salad mixture consists of apples, peaches, and grapes in the ratio 6:5:2, respectively, by weight. If 39 pounds of the mixture is prepared, the mixture includes how many more pounds of apples than grapes?
OG12	This year Henry will save a certain amount of his income, and he will spend the rest. Next year Henry will have no income, but for each dollar that he saves this year, he will have 1 + r dollars available to spend. In terms of r, what fraction of his income should Henry save this year so that next year the amount he has available to spend will be equal to half the amount that he spends this year?
OG12 OG15 OG16 OG17 OG18 OG19 OG20 OG2022	In a certain business, production index p is directly proportional to efficiency index e, which is in turn directly proportional to investment index i. What is p if i = 70 ?(1)e = 0.5 whenever i = 60.(2)p = 2.0 whenever i = 50.
OG12 PREP07 Test 2	In the rectangular coordinate system, are the points (r,s) and (u,v) equidistant from the origin?(1)r+s=1(2)u = 1 - r and v = 1 - s
OG12 OG15 OG16 OG17 OG18 OG19 OG20 OG2022	if $${m}^{-1}=-\frac{1}{3}$$,then $${m}^{-2}$$ is equal to
OG12 OG15 OG16	If x is an integer, is $${9}^{x}+{9}^{-x}=b$$ ?(1)$${3}^{x}+{3}^{-x}=\sqrt{b+2}$$(2)$$x > 0$$
OG12 OG15	Lois has x dollars more than Jim has, and together they have a total of y dollars. Which of the following represents the number of dollars that Jim has?
OG12 OG15 OG16	If n is a positive integer, is$${(\frac{1}{10})}^{n}<0.01$$(1)$$n >2$$(2)$$(\frac{1}{10})^{n-1}<0.1$$
OG12 OG15 OG16	During a certain season, a team won 80 percent of its first 100 games and 50 percent of its remaining games. If the team won 70 percent of its games for the entire season, what was the total number of games that the team played?
OG12 OG15 OG16	Of 30 applicants for a job, 14 had at least 4 years' experience, 18 had degrees, and 3 had less than 4 years' experience and did not have a degree. How many of the applicants had at least 4 years' experience and a degree?
OG12 OG15 OG16 OG17 OG18 OG19 OG20 OG2022	If n is a positive integer, what is the tens digit of n ?(1)The hundreds digit of 10n is 6.(2)The tens digit of n + 1 is 7.
OG12 OG15	if 1+$$\frac{1}{x}=2-\frac{2}{x}$$,then x=