Rex runs one mile in 5 minutes, stan runs one mile in 6 minutes, and tim runs one mile in 7 minutes. there are 5280 feet in one mile. by how many feet does tim trail stan at the moment that rex completes a one-mile run? express your answer as a decimal to the nearest tenth.

Step-by-step explanation:

Find the velocity of Tim and Stan, by dividing the distance between the time:

The distance that Stan and Tim travel in 5 minutes is equal to their respective velocity multiplied by the time.

The answer to the question is the difference in miles traveled by Stan minus those traveled by Tim.

"standard form:

3x2 + 14x − 10 = 0

solutions based on quadratic formula:

x1   = −14 − √ 142 − 4×3×(−10) /   2×3   = −14 − 2 × √ 79 /   6   ≈ −5.296

x2   = −14 + √ 142 − 4×3×(−10) /   2×3   = −14 + 2 × √ 79 /   6   ≈ 0.629