Answer:
B
Step-by-step explanation:
y represents the time she will get there. She will get there in 1/2 the time so 1/2x. >> y=1/2x
BUT she was delayed for 15 minutes before she departed with her alternate route. So you have to add 15 minutes. >> y=1/2x+15
Hope that helps.
P.S. Please consider brainliest (but only if you understand it). I need 2 more to rank up.