Solve the problem.Suppose a plumber charges $160 for the first hour plus $70 for each additional hour. Write an expression for the cost (in dollars) of a job lasting n hours.
A. 160 ? 70n-1
B. 230n
C. 160 + 70n
D. 160 + 70(n - 1)
Answer: D
Mathematics
You might also like to view...
Solve the system for x and y. Show your answer as an ordered pair, (x, y). -5x - 5y = -10 3x + 2y = 6
A. (2, 0) B. (1, 1) C. No solution D. (2, 1)
Mathematics
Write the decimal in words.0.067
A. Sixty-seven hundredths B. Sixty-seven hundred-thousandths C. Sixty-seven thousandths D. Sixty-seven ten-thousandths
Mathematics
Fill in the blank.
angle has a measure of 90°.
A. A right B. An acute C. An obtuse D. A straight
Mathematics
Perform the indicated operation. Simplify the result if possible.22 ft 5 in. - 13 ft 8 in.
A. 9 ft 9 in. B. 35 ft 9 in. C. 9 ft 3 in. D. 8 ft 9 in.
Mathematics