Use front-end rounding to round each number. Then, add or subtract the rounded numbers to get an estimated answer. Finally, find the exact answer.estimate exact 
A. Estimate: 59; exact: 64.97
B. Estimate: 60; exact: 66.97
C. Estimate: 59; exact: 55.97
D. Estimate: 59; exact: 65.97
Answer: D
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Decide whether or not the functions are inverses of each other.f(x) = 
, g(x) =
A. No B. Yes
Solve the equation by making an appropriate substitution.x-2 + 8x-1 = -13
A. 
B. 
C. 
D. 
Factor the trinomial containing two variables. If the polynomial is prime, so state.x2 + 3xy - 208y2
A. (x + 16y)(x - 13y) B. (x - 16y)(x + 13y) C. (x - y)(x + 13y) D. (x - 16y)(x + y)
The mean weight of a group of boys is 165 lb, with a standard deviation of 20 lb. If the weights are normally distributed, find the probability that one of the boys picked at random from the group weighs between 150 and 195 lb. Round your answer to four decimal places. ?
A. 0.4332 B. 0.2734 C. 0.1598 D. 0.7066 E. 0.2934