Solve the problem.The formula P = 0.64x2 - 0.042x + 1 models the approximate population, P, in thousands, for a species of fish in a local pond, x years after 2010. During what year will the population reach 77.978 thousand fish?
A. 2022
B. 2023
C. 2020
D. 2021
Answer: D
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Provide an appropriate response.A 3% discount is given if you pay cash at the gas pump. The pump showed a charge of $16.00 before the discount. How much is saved with the discount?
A. $4.80 B. $11.20 C. $15.52 D. $0.48
Solve the problem.The polynomial 
measures the concentration of a dye in the bloodstream x seconds after it is injected. Does the concentration increase between 12 and 13 seconds?
A. No B. Yes
Provide an appropriate response.A ball rebounds 
of its previous height after each bounce. If the ball is tossed up to a height of 16 feet, how far has it traveled in the air when it hits the ground for the fifteenth time?
Fill in the blank(s) with the appropriate word(s).
Solve.
= 0
A. {0} B. {-5, 0} C. {-5, 5} D. {0, 5}