Option B is correct
Why
3x=21
3(7) =21
21=21
Step-by-step explanation:
Without the tip it was $60. If you are being asked to add the tip it will be $69
Here is how we get the answer....
First, replace f(x) with y . ...
Replace every x with a y and replace every y with an x .
Solve the equation from Step 2 for y . ...
Replace y with f−1(x) f − 1 ( x ) . ...
Verify your work by checking that (f∘f−1)(x)=x ( f ∘ f − 1 ) ( x ) = x and (f−1∘f)(x)=x ( f − 1 ∘ f ) ( x ) = x are both true.
Answer:
10
Step-by-step explanation:
If you count ten seconds before the next thunder/lightning, then divide by 5, you'll get 2.
2=2 miles
