is $5 per pencil a unit rate or ratio

$5 per pencil is a unit rate.

is $3.33 per can a unit rate or ratio

$3.33 per can is a unit rate.

is 22.5 per gallon a unit rate or ratio

$22.5 per gallon is a unit rate.

is 115 miles : 5 gallon a unit rate or ratio

115 miles : 5 gallons is a ratio.

is 90 miles : 7 gallon a unit rate or ratio

90 miles : 7 gallons is a ratio.

is 12 dollars : 7 cans a unit rate or ratio