Answer :
y(A)=91
y(B)=55+ 0.90 m
for what m will y(A)=y(B)?
y(A)=y(B)
91=55+0.90m
0.90m= 36
m=40
company B is better if the distance is < 40 miles
company A is better if the distance is > 40 miles
for what m is y(A) greater or equal to y(B)??
0<m _< 40
y(B)=55+ 0.90 m
for what m will y(A)=y(B)?
y(A)=y(B)
91=55+0.90m
0.90m= 36
m=40
company B is better if the distance is < 40 miles
company A is better if the distance is > 40 miles
for what m is y(A) greater or equal to y(B)??
0<m _< 40