Answer:
15x + 9 (We combing like terms. Ex. 16x and -x)
In order to figure this out, we can set up a proportion and simplify using cross multiplication.

One grapefruit costs
89 cents.
Answer:
16. 5.1b + 0.8
17. x
Step-by-step explanation: All you have to do is add the common values 3.2b and 1.9b
Answer:
x = -2, y = 2
Step-by-step explanation:
-7x + 7y = 28
7y = 28 + 7x
y = 4 + x ----(1)
-8x+4y=24 -----(2)
sub (1) into (2)
-8x+4(4+x)=24
-8x+16+4x = 24
-8x+4x = 24-16
-4x = 8
x = -2
sub x = -2 into (1)
y=4+(-2) = 2
The slope formula is m= y2-y1/x2-x1.
m= 4-0/2-5
m=4/-3
Therefore, 4/-3 is the slope.