Solve the problem.The radius r of a plastic tube used in manufacturing a child's toy must not differ from the standard s by more than 2 millimeters. The manufacturing engineers express this as 
Find the limits of r if the standard s is 33.
A. 29 ? r ? 31
B. r ? 29 or r ? 31
C. r ? 31 or r ? 35
D. 31 ? r ? 35
Answer: D
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Solve the problem.In the formula N = Iekt, N is the number of items in terms of an initial population I at a given time t and k is a growth constant equal to the percent of growth per unit time. There are currently 75 million cars in a certain country, increasing by 1.1% annually. How many years will it take for this country to have 95 million cars? Round to the nearest year.
A. 5 yr B. 272 yr C. 18 yr D. 21 yr
Solve the problem.Ms. Losch has a piece of rope 
long that she cuts into pieces for an experiment in her first-grade class. Each piece of rope is to be 
long. How many 
long pieces of rope can she cut from the original piece of rope?
A. 2 pieces of rope B. 23 pieces of rope C. 21 pieces of rope D. 22 pieces of rope
Find the product.(4p - 1)(16p2 + 4p + 1)
A. 64p3 + 20p2 - 1 B. 64p3 + 1 C. 16p3 - 1 D. 64p3 - 1
Factor the trinomial using the Factor Game. If the trinomial is not factorable, write prime.p2 - 13p + 42
A. (p - 7)(p + 6) B. (p + 7)(p - 6) C. (p - 7)(p - 6) D. (p + 7)(p + 6)