Write an expression using exponents.12x ? x ? x ? y ? y ? y ? z
A. 12x3y3z
B. 12xyz7
C. 12x3 + 12y3 + 12z
D. 84xyz
Answer: A
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Simplify.
A. 
B. 298
C. 
D. 9
Write the decimal in numbers.Three thousand and eighty-five ten-thousandths
A. 3085.0000 B. 3000.0085 C. 30,085 D. 3000.085
Use an inverse function to find all approximate solutions to the equation. 5 tan x + 6 = 0
A. x = 2.2655 + n?, for integers n B. x = 0.8761 + n?, for integers n C. x = 4.0177 + n?, for integers n D. x = 2.2655 + n?, x = 4.0177 + n?, for integers n
Solve the problem. Assume that simple interest is being calculated in each case. Round your answer to the nearest cent if necessary.John Lee's savings account has a balance of $2247. After 15 months, what will the amount of interest be at 4.0% per year?
A. $104.89 B. $149.80 C. $112.35 D. $89.88