Use the graph and formula for f(x) to find the average rates of change of f from -4 to -1 and from 1 to 4.y = -0.4x2 + 3
A. -2; -2
B. 2; -2
C. -2; 2
D. 2; 2
Answer: B
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A food dehydrator offered on a home shopping channel can be purchased by making 5 equal monthly payments. If the price is $153.25, how much is each monthly payment?
A. $31.10 B. $30.65 C. $153.25 D. $38.31 E. none of these
Find the slope of the line.x = -4
A. 0 B. undefined C. 4 D. -4
Choose the most reasonable metric length unit. Choose from km, m, cm, and mm.Marian drove 340 
on vacation.
A. km B. m C. cm D. mm
Solve the problem.Dmitri needs 6 liters of a 14% solution of sulfuric acid for a research project in molecular biology. He has two supplies of sulfuric acid solution: one is an unlimited supply of the 18% solution and the other an unlimited supply of the 12% solution. How many liters of each solution should Dmitri use?
A. 1.5 L of 18% solution; 4.5 L of 12% solution B. 2 L of 18% solution; 4 L of 12% solution C. 4 L of 18% solution; 2 L of 12% solution D. 2.5 L of 18% solution; 3.5 L of 12% solution