Seraphina is driving two hours to visit her family. for the first hour, she traveled at a speed of 60 miles per hour. then, in the second hour, she traveled at a speed of 73 miles per hour. what is the percentage increase of seraphina's speed? if necessary, round to the nearest tenth of a percent.

percent change = (amount of change)/(original amount) × 100%

... = (73 -60)/60 × 100%

... = 13/60 × 100%

... ≈ 0.216667 × 100%

... ≈ 21.7%

Sarah's speed in the second hour was about 21.7% greater than in the first hour.

option 1

data plot with   3 dots over 33, 1 dot over 34, 2 dots over 35, no dot over 36, 1 dot over 37, 2 dots over 38, 4 dots over 39, and 2 dot over 40.

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step-by-step explanation: