4x+4y=-12
2x+4y=6
I am studying math and I i don’t know how to answer this question

Find the x-intercept and y-intercept of the line. 3x + 5y = −15

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9