Find the derivative of f(x) = 7 divided by x at x = 1

If you know the rules for differentiation, then

If you don't, you can use the definition of the derivative to first find :

Plug in to get the same result.

Or, you can directly compute the value of the derivative using the limit definition:

8y^50

step-by-step explanation:

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.