A plumber charges $40, plus $50 per hour (or fraction of an hour), to install a new bathtub. Graph the points (t, c), where t is the time it takes to do the job and c is the cost.
?
A. ?
B. ?
C. ?
D. ?
Answer: A
Mathematics
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Write the rate as a unit rate.2100 people in 50 buses
A. 0.024 person/bus B. 420 people/bus C. 42 people/bus D. 2050 people/bus
Mathematics
A large number of female llama were studied. It was found that this species of llama has a mean gestation period of 350 days with a standard deviation of 11 days. (Gestation period is defined as the time from conception to birth.) Use this to information to solve the problem.
What percent of llamas have gestation periods between 339 and 372 days?
A. 95% B. 63.5% C. 84% D. 81.5%
Mathematics
Multiply.5(7)(b ? 1)
A. 350b B. 25b C. 30b D. 35b
Mathematics
Simplify the expression.
? 
A. 
B. 
C. 
D. 
Mathematics