Iven that f(x) = 5x − 10 and g(x) = x + 3, solve for f(g(x)) when x = −1

Which ratio is equivalent to 10: 85

Which function has the same domain as y=2x

Acyclist bike x distance at 10 miles per hour .and returns over the same path at 8 miles per hour.what is the cyclist average rate for the round trip in miles per hour ?