The bus to a science exposition averaged 18 miles to a gallon of gas. How far away was the exposition if they used 8 gallons of gas for the road trip

144 miles

Step-by-step explanation:

Distance = (fuel economy measure)(number of gallons of gas used)

Here,

Distance = (18 mpg)(8 gallons) = 144 miles

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.