Question

A phone company offers two monthly charge plans. In Plan A, the customer pays a monthly fee of s1.80 and then an additional s cents per minute of use. In Plan B, there is no monthly fee, but the customer pay 6 cents per minute of use. For what amounts of monthly phone use will Plan A cost more thar an B? Use m for the number of minutes of phone use in a month, and solv your inequality for m. Teresa is going to rent a truck for one day. There are two companies she can choose from, and they have the following prices. Company A charges an initial fee of s42.50 and an additional so cents for every mile driven. Company B charges an initial fee of s3s and an additional 60 cents for every mile driven. For what mileages wili Company A charge no more than Company B? Write your answer as an inequality, using m for the number of miles driven Aa

Answer 1

1)

plan A monthly fee = $ 1.80

and 5 cents per minute

so, equation for plan A can be written as

y = .05m + 1.80

where , y = total charge

m = number of minutes

plan B has no monthly fee

and 6 cents per minute

so, equation for plan B is written as

y = .06m

setting up the inequality

.05m + 1.80 > 0.06m

.06m - 0.05m < 1.80

0.01m < 1.80

m < 1180

for less than 1180 minutes plan A will cost more than plan B