Solve the initial value problem.Differential Equation: 
= 
(t + 2)5/2i + etjInitial Condition: r(0) = 0
A. r(t) = [(t + 2)7/2 - 27/2]i + (et - 1)j
B. r(t) = [(t + 2)9/2 - 29/2]i + (et - 1)j
C. r(t) = [(t + 2)7/2 + 27/2]i + (et + 1)j
D. r(t) = (t + 2)7/2i + etj
Answer: A
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Use simple probability to complete the exercises.Use the spinner below to answer the question. Assume that it is equally probable that the pointer will land on any one of the five numbered spaces. If the pointer lands on a borderline, spin again. Find the probability that the arrow will land on 1 or 5. 
A. 1
B. 3
C. 
D. 
Calculate using the rules for order of operations.20 - 
+ 2 ÷ 9 ? 102Round to two decimal places, if necessary.
A. 0.02 B. 16.00 C. 38.22 D. 200.00
Multiply. Assume all variables represent nonnegative real numbers.
? 
A. x5y5
B. x5y4
C. x5y6
D. x5y4
Solve the problem.
The graph of y = f(x) represents the amount of oil in millions of gallons remaining in a tank after x days. (i) Estimate the initial and final amounts of oil contained in the tank. (ii) When did the amount of oil in the tank remain constant?
A. 160 million gallons, 60 million gallons; 12 ? x ? 14 B. 160 million gallons, 20 million gallons; 0 ? x ? 6 or 8 ? x ? 14 C. 160 million gallons, 60 million gallons; 0 ? x ? 4 or 12 ? x ? 14 D. 140 million gallons, 40 million gallons; 8 ? x ? 16