An aircraft travels with the wind for 120 miles in 0.75 of an hour. The return trip is flown against the wind and takes exactly 1 hour. Which system of linear equations represents x , the speed of the plane in miles per hour, and y , the speed of the wind in miles per hour? Recall the formula d is equal to r t
Answer
A
120 times x minus y is equal to 0 point 75 120 times x plus y is equal to 1
B
0 point 75 times x plus y is equal to 1 2 0 x minus y is equal to 1 2 0
C
0 point 75 times x plus y is equal to 120 x plus y is equal to 120
D
120 times x plus y is equal to 0 point 75 120 times x minus y is equal to 1