Simplify the expression. Use positive exponents. Assume variables represent nonzero real numbers.
A. 
B. 
C. t-7
D. t2
Answer: A
Mathematics
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Solve the problem.You park your car in a pay lot. Because you have a coupon, you get the first 
You pay for an extra 4
hr. How long can you park?
A. 8 hr B. 7 hr 15 min C. 7 hr 75 min D. 8 hr 15 min
Mathematics
Simplify the expression.
A. 4
B. 2
C. 2
D. 
Mathematics
Solve the problem.Sue can sew a precut dress in 3 hours. Helen can sew the same dress in 2 hours. If they work together, how long will it take them to complete sewing that dress? Give your answer rounded to one decimal place, if necessary.
A. 1.8 hr B. 5 hr C. 2.5 hr D. 1.2 hr
Mathematics
Solve. Provide answers in interval notation.(x + 9)(x - 5)(x + 2) > 0
A. (-9, -2) ? (5, ?) B. (-9, -5) ? (2, ?) C. (-?, 5) ? (2, 9) D. (-?, -9) ? (2, 5)
Mathematics