Solve the problem.The amount of particulate matter left in solution during a filtering process is given by the equation P = 500(2)-0.8n, where n is the number of filtering steps. Find the amounts left for 
and 
(Round to the nearest whole number.)
A. 500; 31
B. 500; 16
C. 1000; 31
D. 500; 8000
Answer: A
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Determine whether or not the equation is quadratic.x2 + 4 = 7x
A. Quadratic. B. Not quadratic.
Solve the problem.Find out how long it takes a $3100 investment to earn $300 interest if it is invested at 8% compounded monthly. Round to the nearest tenth of a year. Use the formula 
A. 1 years B. 1.6 years C. 1.4 years D. 1.2 years
Solve the problem.The owner of a video store has determined that the cost C, in dollars, of operating the store is approximately given by 
where x is the number of videos rented daily. Find the lowest cost to the nearest dollar.
A. $660 B. $610 C. $510 D. $760
Find the indicated term.-3, -12, -48, . . . ; the 15th term
A. -805,306,368 B. 3.221225472e+09 C. 1.288490189e+10 D. -268,435,456