Solve the problem.Doris has a fish pond 8 by 15 feet. She wants to put grass in a strip of uniform width around the pond. She has enough grass seed for 174 square feet. How wide will the strip be?
A. 5 ft
B. 5.5 ft
C. 3 ft
D. 4 ft
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) = 17x - 0.2x3, for |x| ? 9. How much work is done in compressing the spring from its equilibrium position (x = 0) to x = -2? Round to two decimal places when appropriate.
A. 360.45 J B. 720.9 J C. 64.8 J D. 33.2 J
A car is driving north at a constant velocity of 56 miles per hour. Since velocity is constant, distance north, in miles, is a linear function. What is the slope of this linear function? ?
A. 56 miles per hour B. -56 miles per hour C. 0 miles per hour D. None of the above.
Use the rules for exponents to rewrite the expression and then evaluate the new expression. (-2)2(-2)3
A. -64
B. -32
C. 
D. 
Evaluate the expression for x = -2, y = 3, z = -4.-5x - 7y - 4z
A. 15 B. 7 C. 5 D. 26