Walking on his own, the distance, d, in feet, that roberto can cover in m, minutes is given by the function d(m)=264m. when he walks on the moving sidewalk at the airport, the distance, a, in feet, that he can cover in m m minutes is given by the function a(m)=440m. let b be the distance, in feet, that roberto would travel on the moving sidewalk in m m minutes if he were standing still. write a formula for b(m) in terms of d(m) and a(m).

B(m)=A(m)-D(m)

B(m)=176m

Step-by-step explanation:

we are given

Walking on his own, the distance, D, in feet, that Roberto can cover in M, minutes is given by the function

D(m)=264m

When he walks on the moving sidewalk at the airport, the distance, A, in feet, that he can cover in m m minutes is given by the function

A(m)=440m

B is the distance, in feet, that Roberto would travel on the moving sidewalk in  m minutes if he were standing still

moving sidewalk distance = standstill distance + walking distance

A(m)=D(m)+B(m)

so, we get

B(m)=A(m)-D(m)

now, we can plug values

B(m)=440m-264m

B(m)=176m