Solve the problem.It costs $27 per hour plus a flat fee of $20 for a plumber to make a house call. After writing an equation for this situation, suppose the total cost to have a plumber come to a house is $290. How many hours did the plumber work?
A. 6 hr
B. 10 hr
C. 17 hr
D. 21 hr
Answer: B
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Write the value of the decimal number.3675.0055
A. Thirty-six thousand seventy-five and fifty-five ten-thousandths B. Three thousand six hundred seventy-five and fifty-five ten-thousandths C. Thirty-six thousand seventy-five and fifty-five thousandths D. Three thousand six hundred seventy-five and fifty-five thousandths
Simplify the complex fraction.
A. 
B. 18x(x + 9)
C. 
D. 
Solve the problem.ABC phone company charges $21 per month plus 3¢ per minute of phone calls. XYZ phone company charges $12 per month plus 6¢ per minute of phone calls. How many minutes of phone calls in a month make XYZ phone company the better deal?
A. Less than 30 minutes B. More than 300 minutes C. Less than 300 minutes D. More than 30 minutes
Use the limit rules to find the limit.Let
f(x) = 8. Find
.
A. 8 B. 2 C. 7 D. 3