Answer:
13
Step-by-step explanation:
b= 3
3x3= 9
9+4= 13
3x3+4=13
Hope this helps

and so on, and then, you graph those x,y coordinates
Answer:
$3.90
Step-by-step explanation:
its B
Let the function be y = ax + c.
For (-1,8), 8 = a(-1) + c → 8 = - a + c
For (5,6), 6 = a(5) + c → 6 = 5a + c
Subtract one from abother,
2 = - 6a => - 1/3 = a
Hence, 8 = - 1/3 + c → 23/3 = c
Relation is:
y = (-1/3)x + (23/3)
3y = - x + 23
3y = 23 - x