Solve.Jeff starts driving at 55 miles per hour from the same point that Lauren starts driving at 50 miles per hour. They drive in opposite directions, and Lauren has a half-hour head start. How long will they be able to talk on their cell phones that have a 320-mile range?
A. 3
hr
B. 2
hr
C. 3
hr
D. 3
hr
Answer: B
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Simplify without using a calculator.361/2
A. 24 B. 6 C. 3 D. 12
Factor completely, if possible.3x3 + 24x2 + 8x + 64
A. (3x2 - 8)(x - 8) B. (3x + 8)(3x - 8)(x + 8) C. (3x2 + 8)(x + 8) D. (x2 + 8)(3x + 8)
Solve the problem.The marriage rate in a certain country in 1990 was 0.96%, and there were about 420,000 marriages that year. Use the model M(t) = M0(1 + r)t, with a constant marriage rate and t = 0 corresponding to 1990 to estimate the number of marriages in 1999.
A. 457,713 B. 290,864 C. 0.00290864 D. 958,394
Write the number in words.23,705
A. twenty-three hundred thousand, seven hundred five B. two thousand three, seven hundred five C. twenty-three thousand, seventy-five D. twenty-three thousand, seven hundred five