Answer:

Step-by-step explanation:
First, subtract by 7 both sides of equation.

Solve.


Then, divide by 12 both sides of equation.

Solve to find the answer.

, which is our answer.
3.30 x 5 = 16.50
4.30 x 7 = 30.10
30.10 + 16.50 = $46.60
Answer:
3,943.84
Step-by-step explanation:
Since we know the angle of the arc is 70°, its length will be 7/36 of the whole circumference. The circumference, which is 2*pi*r, is 20 pi = 62.8, so the arc JL is 7/36 * 62.8 = 3,943.84