Four plumbers each charge a flat fee plus an hourly rate for repair visits. The table shows their total costs for repairs that required various amounts of time. Total Cost of Repairs
Hours needed for repair
Cost for plumber
A
Cost for plumber
B
Cost for plumber
C
Cost for plumber
D
1
$35
$55
$50
$50
2
$65
$75
$75
$60
3
$95
$95
$100
$70

Which plumber charges the greatest hourly rate?

Asales representative from a local radio station is trying to convince the owner of a small fitness club to advertise on her station. the representative says that if the owner begins advertising on the station today, the club's total number of members will grow exponentially each month. she uses the given expression to model the number of club members, in hundreds, after advertising for t months.