Amelia has a job baby-sitting for a neighbor she is paid $20 plus $2.50 for each hour on the job. if amelia wants to earn $40 to buy a new sweater, how many hours would she need to work?

8 hours

Step-by-step explanation:

set up your equation as y=mx+b. if she gets paid $20 already then that's your b. y= mx+ 20. x is your hours, so if she gets paid 2.5 with every hour then that would be your m. y=2.5x+20. if the sweater costs $40 and you already received $20 as your start up pay, then you only need to earn $20 more. you divide 20 by 2.5 and get 8. that means Amelia needs to work 8 hours to pay for the new sweater she wants. plug it in to double check your work,

40 = 8(2.5)+20

-20             -20

20 = 8(2.5)

20 = 20

-20   -20

=0

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throw the computer

step-by-step explanation: