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
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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:
C
Step-by-step explanation:
A function is "a expression or equation involving one or more variables".
For example:
(x² + 7a) is a function.
hope this helps
Answer:
(0,7) should be the answer.
No, 1 and 3/9 can be simplified to 1 and 1/3
