Question

Determine whether this table represent a constant rate of change.

number of items
1
2
4
7
cost ($)
4.50 9.00 18.00 31.50
Yes
No

Answer 1

Yes

Explanation:

1 is 4.50

4.50*2=9

4.50+4.50

(4+4) + (0.50+0.50)

4.50*4=18.00

4.50+4.50+4.50+4.50

(4+4+4+4) + (0.50+0.50+0.50+0.50)

4.50*7= 31.50

4.50+4.50+4.50+4.50+4.50+4.50+4.50 0.50

(4+4+4+4+4+4+4) + (0.50+0.50+0.50+0.50+0.50+0.50+0.50)

Sorry if I confused you more when I broke it down. I just remembered the easiest way I learned