Write the expression in exponential form. Assume that all variables represent positive real numbers.
3
A. x-3/5
B. x3/5
C. x5/3
D. x2
Answer: B
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Write the number in expanded form.96,734
A. 96,734 B. 9000 + 600 + 70 + 34 C. 40,000 + 3000 + 700 + 60 + 9 D. 90,000 + 6000 + 700 + 30 + 4
Solve the problem.At the beginning of an advertising campaign for a new product in a city of 500,000 people, no one is aware of the product. After 10 days, 100,000 people are aware of the product. If N = N(t) is the number of people (in thousands) who are aware of the product t days after the beginning of the advertising campaign, solve the following differential equation for N(t): 
A. 
B. 
C. 
D. 
Solve the problem.Suppose a cost-benefit model is given by y = 
, where y is the cost in thousands of dollars for removing x percent of a given pollutant. Find the cost of removing 80% to the nearest dollar.
A. $1680 B. $4000 C. $8400 D. $2100
Multiply.19 ? (-6)
A. -133 B. -108 C. 133 D. -114