Answer: 5
Step-by-step explanation:
3+4+5+8 = 20/4 = 5
x= total minutes -4 the 1st 4 minutes are included in the .30
total cost = .3 + .18 x
3 = .3 +.18 x
subtract .3 from each side
2.7 = .18x
divide by .18 on each side
2.7/.18 = x
15 = x
x = total minutes -4
add 4 to each side
15+4 = total minutes
they can talk 19 minutes
Answer:
(choice B)
The y intercept is 1 as this is where the graph crosses the y axis. So b = 1
The slope is m = 2/3 because we go up 2 for each time we move 3 units to the right. Example: moving from (0,1) to (3,3)
That means y = mx+b turns into ![y = \frac{2}{3}x+1](https://tex.z-dn.net/?f=y%20%3D%20%5Cfrac%7B2%7D%7B3%7Dx%2B1)
This looks like choice B is the closest match though the formatting you posted is a bit jumbled.