Use the formula Distance = rate - time. If Jack drives 120 miles at a constant speed of 80 mph , how long will it take? (Be sure to include units.) Answer (number then units):

We start with the formula for distance: \[ \text{Distance} = \text{rate} \times \text{time} \] Let \( d = 120 \) miles, \( r = 80 \) mph, and \( t \) be the time in hours. Substitute the given values into the formula: \[ 120 = 80 \times t \] Solve for \( t \): \[ t = \frac{120}{80} = 1.5 \] Thus, it will take \( 1.5 \) hours.