Solve. Round all dollar amounts to the nearest cent, if necessary.A population of bacteria increased from 80 million to 180 million. Find the percent increase.
A. 55.6%
B. 125%
C. 225%
D. 69.2%
Answer: B
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Solve the problem.The following list of digits was taken from a table of random numbers. We will let them represent 50 tosses of 5 fair coins. The digits 0-4 represent an H and the digits 5-9 represent a T. Use this simulation to estimate the probability of getting two heads on a toss of five coins.
A. 
B. 
C. 
D. 
Find the volume of the solid. Use 
for ?.
A. 71
cu in.
B. 13
cu in.
C. 2
cu in.
D. 23
cu in.
Solve the problem.When 4 times a number is subtracted from 7 times the number, the result is 21. What is the number?
A. 3 B. 0.6 C. 7 D. -7
Use the quadratic function to determine if the function has a maximum or minimum value and then find this maximum or minimum value.f(x) = x2 + 18x + 71
A. maximum at (0, -9) B. minimum at (-9, -10) C. maximum at (-10, -9) D. minimum at (-10, 0)