Solve. If needed, round money amounts to two decimal places and all other amounts to one decimal place.The radiator in a certain make of car needs to contain 
of 40% antifreeze. The radiator now contains 
of 20% antifreeze. How many liters of this solution must be drained and replaced with 100% antifreeze to get the desired strength?
A. 20 L
B. 25 L
C. 12.5 L
D. 16.7 L
Answer: C
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Solve the problem.Hooke's law is applicable to idealized (linear) springs that are not stretched or compressed too far. Consider a nonlinear spring whose restoring force is given by F(x) = 16x - 0.2x3, for |x| ? 9. How much work is done in stretching the spring from its equilibrium position (x = 0) to x = 0.5? Round to two decimal places when appropriate.
A. 2 J B. 319.95 J C. 3.99 J D. 639.9 J
Find the area if the distance between two adjacent dots in a row or column is one unit.
A. 12 B. 6 C. 18 D. 9
Solve the problem.Find three consecutive integers such that the square of the sum of the smaller two is 297 more than the square of the largest.
A. -10, -9, -8 B. 10, 11, 12, or -10, -9, -8 C. 8, 10, 12 D. 10, 11, 12
State the property that is illustrated.(4 + 6)(9 + 15) = (4 + 6)9 + (4 + 6)15
A. distributive property of multiplication over addition B. commutative property of multiplication C. zero property of multiplication D. associative property of multiplication