# pre-algebra

• Mar 9th 2007, 08:15 AM
dianna
pre-algebra
You would like to purchase a monthly package from and Internet Provider.
States online charges \$2.95 monthly and then 30 cents every hour you use the service.
Big Neat Online charge \$4.95 monthly plus 10 cents every hour you use the service.
Which service would be the cheapest,if you average 51 hours a month online?:confused:
• Mar 9th 2007, 08:29 AM
earboth
Quote:

Originally Posted by dianna
You would like to purchase a monthly package from and Internet Provider.
States online charges \$2.95 monthly and then 30 cents every hour you use the service.
Big Neat Online charge \$4.95 monthly plus 10 cents every hour you use the service.
Which service would be the cheapest,if you average 51 hours a month online?:confused:

Hello, dianna,

let C be the costs for/of the service
let t be the hours you are online

Then the costs can be calculated by:

States online: C = 2.95 + 0.3*t
Big Neat online: C = 4.95 + 0.1*t

Now plug in t = 51 and you'll get:

SO: C(51) = \$18.25
BN: C(51) = \$10.05

By the way: At t = 10 h both providers want \$5.95

EB