The answer is bc if you add them all together
Answer:
Step-by-step explanation:
Given
Solving (a): T7
Substitute 7 for n in
Calculate S7 and S6
So:
Solving (b): Tn
Where
Calculate
We have:
Open brackets
So:
Collect Like Terms
Y = m x + b , where m is the slope. The slope is the rise over the run or the change in x ( rooms cleaned ) over the change in y ( cost ).
125 = m * 1 + b
175 = m * 2 + b
-----------------------
b = 125 - m
175 = 2 m + 125 - m
m = 175 - 125
m = 50 ( the rate of change ), b = 75
The formula is: y = 50 x + 75
It means that the starting cost will be $75 and that for every room cleaned, the cost will rise for $50.
Answer:
96
Step-by-step explanation:
8y+3z
9(8)+3(8)
72+24
96
Answer: 5
Step-by-step explanation:
