Charles charges $4 an hour to baby-sit. He also adds an extra $10 onto the total for families with more than three children. How much will Charles charge to baby-sit 4 children for 4 hours? A. $48
B. $26
C. $56
D. $160

a) 15/7

step-by-step explanation:

no this is a nonlinear negative

42

step-by-step explanation:

y = 3x+4

step-by-step explanation:

to find the slope

slope = (y2-y1)/ (x2-x1)

    = (-8-4)/ (-4-0)

    = -12/-4

  = 3

using the slope intercept form of a line

y= mx+b

we know the slope is 3

we know the y intercept is 4 ( the point where it crosses the y axis or x=0)

y = 3x+4