Eric takes a train to his parent’s house 320 miles away. if the trip takes 4 hours, what is the unit rate of the train?

80 miles per hour

Step-by-step explanation:

Eric takes a train to his parent’s house 320 miles away.

If the trip takes 4 hours.

A train covers 320 miles in 4 hours.

The unit rate of train is number of miles cover in 1 hour.

Using formula:

where, distance = 320 miles

Time = 4 hours

Hence, The unit rate of train is 80 miles per hour.

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb