For which polynomial is 4x+3 a factor?

a) 3x^2+5x-12

b) 40x^2+22x-6

c) 48x^2+16x-16

d) 36x^2+35x+8

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

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

What are the exclude value of mn+3m