Question

Express each ratio as a unit rate. Round to the nearest tenth, if necessary.

400 feet in 52.4 seconds
a.
76 feet per second
c.
7.7 feet per second
b.
0.76 foot per second
d.
7.6 feet per second

Answer 1

7.63358778625

Answer 2

so i'll will say D. :)

Answer 3

400 feet in 52.4 seconds
a. 400:52.4
400/52.4
7.6 (nearest 1/10) : 1.0
Therefore 7.6 feet/sec

76 feet per second
c. 76 feet/sec

7.7 feet per second
b. 7.7 feet/sec


0.76 foot per second
d. 0.76 feet/sec

7.6 feet per second
7.6 feet/sec

The answers apart from the first answer are all given in the question xD It literally says per second, are you meant to give them in standard form or a different form of rate such as m/s?