A trip out on a dive boat usually costs $48. Reef Rangers is having a sale, where they are now charging $39. What is the percent change, rounded to the nearest percent, in the cost of the dive trip?

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

40 x 50 = 2000

step-by-step explanation: