I need help understanding something how to work a couple problems out. This is the first one.

Sandra uses her office fax machine to send fax at the rate of $0.10 per page. She decides to rent a fax machine for $80 a year. The cost of sending a fax using the rented machine is $0.06 per page.

Part A: Write an inequality that can be used to calculate the number of pages that Sandra should fax in a year so that the amount she pays for the rented machine is less than the office machine. Define the variable used.

Part B: How many pages should Sandra fax in a year to justify renting the fa

Question

I need help understanding something how to work a couple problems out. This is the first one.

 Sandra uses her office fax machine to send fax at the rate of $0.10 per page. She decides to rent a fax machine for $80 a year. The cost of sending a fax using the rented machine is $0.06 per page.

Part A: Write an inequality that can be used to calculate the number of pages that Sandra should fax in a year so that the amount she pays for the rented machine is less than the office machine. Define the variable used. 

Part B: How many pages should Sandra fax in a year to justify renting the fa

anonymous · Answer

Part B: How many pages should Sandra fax in a year to justify renting the fax machine? Show your work.

anonymous · Answer

office machine     rented machine
0.10x                   80+0.06x

0.10x > 80+0.06x
x>2000                         x> 2000 pages it's cheaper to use the rented machine

anonymous · Answer

You should probably use the greater than or equal to symbol