At a book store; used hardcover books sell for $8 each and used softcover books sell for $2 each. You purchased 36 used books and spend $144. How many softcover books do you buy?

A local cell phone company of ers two dif erent calling plans. In the I rst plan,
you pay a monthly fee of $30 and $.35 per minute. In the second plan you pay
a monthly fee of $99 and $.05 per minute.
a. Write a system of equations showing the two calling plans.
b. When is it better to use the I rst calling plan?
c. When is it better to use the second calling plan?
d. How much does it cost when the calling plans are equal?

How many threads are you going to start to get your homework done? We'll help, but you must post an attempt.

>duplicate thread removed, other threads merged<