If f(x) = 4 – x2 and g(x) = 6x, which expression is equivalent to (g – f)(3)?

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles