Translate into an equation, then solve.Ken is to receive 680 cc of insulin in three injections. The first injection is to be 
. The second injection is to be 240 cc. How much insulin must be given for the third injection?
A. 170 + 240 + x = 680; x = 750 cc
B. 170 + 240 + x = 680; x = 270 cc
C. 170 - 240 + x = 680; x = 270 cc
D. 170 - 240 + x = 680; x = 750 cc
Answer: B
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Solve the problem.The function A = A0e-0.00693x models the amount in pounds of a particular radioactive material stored in a concrete vault, where x is the number of years since the material was put into the vault. If 800 pounds of the material are initially put into the vault, how many pounds will be left after 160 years?
A. 519 pounds B. 250 pounds C. 640 pounds D. 264 pounds
Simplify using the quotient rule, if possible.
A. 
B. 1
C. m2
D. Cannot be simplified
Perform the indicated operations.(12x2y - 8xy + 4) + (-11x2y + 3xy - 9)
A. 23x2y + 11xy + 13 B. x2y - 5xy - 5 C. -x2y - 11xy + 13 D. -5x3y2 - 5
Find the quotient16 ÷ 
A. 4
B. 12
C. 
D. 