Solve the exponential equation. Use a calculator to obtain a decimal approximation, correct to two decimal places, for the solution.10x = 3.25
A. 1.18
B. 1778.28
C. 32.5
D. 0.51
Answer: D
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Let x be a number. Translate the English phrase or sentence into a mathematical expression. A number increased by 65
A. 65 ÷ x B. x - 65 C. x + 65 D. 65x
Decide whether the composite functions, f ? g and g ? f, are equal to x.f(x) = 
, g(x) = x
A. No, no B. Yes, no C. Yes, yes D. No, yes
Solve the problem.There are 29 contestants in a singing competition. They are to sing in random order. How can the organizer of the competition use a graphing calculator to determine the order?
What will be an ideal response?
Solve the problem.There are currently 69 million cars in a certain country, increasing exponentially by 0.7% annually. How many years will it take for this country to have 91 million cars? Round to the nearest year.
A. 31 yr B. 5 yr C. 442 yr D. 40 yr