The answer to this would be x = 20
2 dollars = 1 hour
8 dollars = 4 hours
she paid 6 dollars so the amount saved = 8-6 = 2 dollars
percentage saved =

× 100
percentage saved = 25%
Answer:
=7.071068
Step-by-step explanation
subtract the x values and y values and square them then add them together and find it's square root
600 620 640 660 680 700
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a. The gradient is


b. The gradient at point P(1, 2) is

c. The derivative of
at P in the direction of
is

It looks like

so that

Then

