15-k. K=Kelsy.
9d. D=doughnuts purchased
23+e. E=elaina's earnings
Answer:
(1)7 (2)9 (3)6
Step-by-step explanation:

(1)The average rate of change between x=2 and x=5

(2)The average rate of change between x=3 and x=6

(3)The average rate of change between x=2 and x=4

The y-coordinate of B' after the translation is -6
<h3>How to determine the y-coordinate of B'?</h3>
From the graph, the coordinate of B is given as:
B = (1,2)
The translation
means:
(x,y) ⇒ (x - 3, y - 8)
So, we have:
B' = (1 - 3, 2 - 8)
Evaluate the difference
B' = (-2, -6)
Remove the x-coordinate
B' = -6
Hence, the y-coordinate of B' is -6
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Answer:
Step-by-step explanation:
6(x+1) = -2(3x+9)
6x+6 = -6x-18
6x+6x+6-6 = -6x+6x-18-6
12x=-24
x= -2
Answer:
-3
Step-by-step explanation:
4x+1=2x-5
-1 -1
4x= 2x-6
-2x -2x
2x=-6
/2 /2
x=-3