Please help me! I'm terrible at math

(3.) x = 45

Step-by-step explanation:

Because the lines are parallel and cut by the same line, the angles within are equal as well.

Which means that...

Angle GE = Angle EFD

Therefore (2x-30) = (x + 15)

2x - 30 = x + 15

    +30       +30    (add 30 to both sides to get rid of the -30)

2x = x + 45

-x    -x                   (subtract x from both sides to get rid of the single positive x)

x = 45

(–3, 3)   then 3 <2(-3) +3 3 < - 3 FALSE
(–2, –2) then -2 <2(-2)+3 -2 < -1 TRUE
(–1, 1)   then 1 <2(-1) +3 1 < 1 FALSE
(0, 1) then 1 <2(0) + 3 1 < 3 TRUE
(2, 5) then 5 <2(2)+3 5< 7 TRUE

answer
(–2, –2)
(0, 1)
(2, 5)