Simplify the expression:

Step-by-step explanation:

1) You would have to distubite the 2 to the numbers inside the paretheis.

2) After that you add the like terms together.

(Nothing to add this term with.)

3) Put them together to make your answer.

i leave the calculator work to you.

7. diameter 4 miles, circumference 4π miles

8. radius 0.2 miles, circumference 0.4π miles

[this is a bad problem because the actual radius of a car on the track is less than 0.2 miles so the answer is less than 0.4π miles]

9. radius 6 feet, circumference 12π feet

10. diameter 14 cm, circumference 14π cm

11. diameter 4.8 feet, circumference 4.8π feet

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step-by-step explanation: vsfdvsfvd