It takes Mark 45 minutes to ride his bike 5 miles. At this rate, how long will it take him to ride 8 miles?

1 hour and 12 mins

Step-by-step explanation:

i think it’s a i believe

this is a direct variation proportion. y = kx

y is the total amount due, k is the constant of variation, and x is the number of texts sent.

plug in the 3.20 and the 16 to solve for the "k". this is the constant of proportionality. it is the value that will not change.

3.20 = k(16). solving you get $.20 per text.

the equation would then be y = .20x