Sally started her own dog walking business. She charges $3.00 per hour per dog. A neighbor down the street had Sally walk he golden retriever for an hour and a half and her chocolate lab for 45 minutes. Calculate how much Sally's neighbor owes her for walking both dogs. Pls show your work.
a. $5.25
b. $7.00
c. $7.50
d. $6.75

Alocal concert promoter purchases 2 3/4 pages of ads. when one of the concerts is cancelled, the promoter cancels 1 5/8 pages of ads. how much advertising space is the concert promoter actually using?

What is a rational number between 9.5 and 9.7

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.