Solve the problem.
Use the graph of the polynomial function f to estimate the 
and to determine whether the leading coefficient is positive or negative.
A. -1, negative
B. 1, positive
C. -1, positive
D. 1, negative
Answer: B
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Solve the problem.A gas station sells 4820 gallons of regular unleaded gasoline in a day when they charge $1.35 per gallon, whereas they sell 3938 gallons on a day that they charge $1.40 per gallon. Find a linear equation that relates gallons sold to price. Use this equation to predict the number of gallons sold at a price of $1.24 per gallon.
A. 6769.4 gallons B. 6764.5 gallons C. 6757.1 gallons D. 6760.4 gallons
Match the graph to the given cylindral or spherical equation.? sin ? = 6
A. 
B. 
C. 
D. 
Solve the problem.Megan Hughes deposits $4900 in an account that pays simple interest. When she withdraws her money 8 months later, she receives $5226.67. What rate of interest did the account pay? Round to the nearest whole percent.
A. 9% per year B. 11% per year C. 10% per year D. 12% per year
Solve the inequality and write the solution set using interval notation; then graph the solution set on a number line. (a + 1)(a - 6)(a - 7) > 0
A. (-1, 6) ? (7, ?)
B. (7, ?)
C. (-?, 6)
D. (-?, -1) ? (6, 7)