Question

problem 9: spiral review
lucy held a penny underwater in a pool and let it go. the penny traveled downward at a rate of 0.8 feet per second.
how many seconds did it take for the penny to move -1.4 feet (1.4 feet downward)?
use the number line if it helps with your thinking.

Explanation:

Step1: Define given values

Rate $r = -0.8$ ft/s, Distance $d = -4.4$ ft

Step2: Use time formula $t=\frac{d}{r}$

$t=\frac{-4.4}{-0.8}$

Step3: Calculate the quotient

$t = 5.5$

Answer:

5.5 seconds