If g(x)=f(x+k), what is the value of k?

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

(01.04 lc)multiply 1 over 6 multiplied by negative 1 over 2. negative 1 over 3 negative 1 over 12 1 over 12 1 over 3

If f(x) = -5x + 1 and g(x) = x3, what is (gºf)(0)? enter the correct answer