Julio has $127 in his bank account. He gets $30 for his birthday. He also has a part-time job that pays $9 per hour. How many hours will he need to work to have $220 in his bank account?

he needs to work for 7 hours.

Step-by-step explanation:

Let x represent the number of hours that he need to work to have $220 in his bank account.

Julio has $127 in his bank account. He gets $30 for his birthday. Since the total amount he wants to have in his bank account is 220, it means that the remaining amount he needs to save is

220 - (127 + 30) = 63

He also has a part-time job that pays $9 per hour. It means that the amount that he would earn if he works for 9 hours is 9x. Therefore,

9x = 63

x = 63/9

x = 7

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!

sorry man i accidentally pressed yes my bad

step-by-step explanation: