Marisol rode her bicycle each day for five days. estimate how far she biked in all. round each number to the nearest whole number

Step-by-step explanation:

Since you haven't shared how many miles Marisol rode her bike each day, I will assume that the average distance she biked was d.  In five days, she biked 5d miles.

For a more specific answer, please share all of the info given in the problem.

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value