Question

a train is moving at an average speed of (5x-8) miles per hour (A) write an expression for the distance traveled by train in 3 hours(B)how far does the train travel in 3 hours if x=15

Answer 1

step by step explanation
A) 5(3) - 8 = 15 - 8, = 7 miles traveled in 3 hours
B) 5(15) - 8 = 75 - 8 = 67 miles traveled in 3 hours

Answer 2

Answer:

a.3(5x-8)

b.201miles

Step-by-step explanation:

A.because per hour (5x-8)miles so 3hours travel distance 3(5x-8)

B.3(5x-8

=3x (5x15-8)    15x5=75

=3x(75-8)         75-8=67

=3x67                67x3=201

=201miles

Hope this helps!