Ebra
tion
jefferson high school is looking to expand its student parking lot by expanding the existing lot as
shown below.
expanded part of lot
165 ft.
school
300 ft-
75 ft.
x ft.
the size of the new parking lot will be twice the size of the old parking lot. how many feet, x, was the
old parking lot expanded by?

i believe the answer is letter c) 8

step-by-step explanation:

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -

cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x