A phone company offers two monthly charge plans. In Plan A, the customer pays a monthly fee of $30 and then an additional 6 cents per minute of use. In Plan B, the customer pays a monthly fee of $43 and then an additional 4 cents per minute of use.

For what amounts of monthly phone use will Plan A cost less than Plan B?
Use m for the number of minutes of phone use, and solve your inequality for m .

Question

A phone company offers two monthly charge plans. In Plan A, the customer pays a monthly fee of $30 and then an additional 6 cents per minute of use. In Plan B, the customer pays a monthly fee of $43 and then an additional 4 cents per minute of use.

For what amounts of monthly phone use will Plan A cost less than Plan B?
Use m for the number of minutes of phone use, and solve your inequality for m  .

anonymous · Answer

.06m+30 is the equation for cost of plan a

.04m+43 is the equation for the cost of plan b

you want to find when plan a is cheaper, or less than plan b so

.06m+30<.04m+43

can you solve for m?

anonymous · Answer

yes i can!!

anonymous · Answer

plan b right?

anonymous · Answer

500 and 107.5

anonymous · Answer

The question was for what amounts of monthly phone use will plan a be cheaper than plan b

anonymous · Answer

Solving you should get 

m<650