Find the best buy (based on cost per unit).You have a coupon for 87 cents off Brand A cereal and a coupon for 41 cents off Brand B. A box of Brand A cereal costs $3.34 for 14.5 ounces. A box of Brand B cereal costs $4.31 for 20.5 ounces. If you use a coupon, which cereal is the better buy?
A. Brand B
B. Equal value
C. Brand A
D. Not enough information
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
Mentally evaluate the expression.
? 
? 
? 
A. - 
B. 
C. - 
D. 
Multiply.(w - z)(w2 + z2 + 5wz)
A. w3 - 4wz2 + 4w2z - z3 B. w3 + 4wz2 - 4w2z - z3 C. w3 - 5 wz2 + 5w2z - z3 D. w3 + 5 wz2 - 5w2z - z3
Answer as indicated in a complete sentence.A bird has a wing span of 59 inches. Express this measure in feet and inches.
A. A bird has a wing span of 4 feet 11 inches B. A bird has a wing span of 4 feet 9 inches C. A bird has a wing span of 3 feet 23 inches D. A bird has a wing span of 11 feet 4 inches