Solve the problem. Use the correct number of significant digits.A computer can do one calculation in 1.2 x 10-7 seconds. How long would it take the computer to do a trillion (1012) calculations?
A. 1.2 x 1012 sec
B. 1.2 x 10-7 sec
C. 1.2 x 106 sec
D. 1.2 x 105 sec
Answer: D
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Find the first four terms of the binomial series for the given function.(1 + 9x)1/3
A. 1 + 3x + 9x2 + 27x3 B. 1 + 3x - 9x2 + 27x3 C. 1 - 3x + 27x2 - 45x3 D. 1 + 3x - 9x2 + 45x3
Determine the quotient.16 ÷ 16
A. 0 B. 16 C. 1 D. Undefined
Decide whether the matrices are inverses of each other. (Check to see if their product is the identity matrix I.)
and 
A. Yes B. No
Solve the problem.Suppose an isolated island has a native population of 10,000 and a person from a visiting ship introduces a disease which has an infection rate of 0.00005. Assume that the rate of spread of the disease satisfies the following logistic equation: 
= k
y, where N is the size of the population and y is the number infected at time t.How many individuals remain uninfected after 5 days?
A. 9788 B. 12 C. 9588 D. 9988