Which function represents the given graph?

Acoin bank containing only dimes and quarters has 12 more dimes than quarters. the total value of the coins is $11. how many quarters and dimes are in the coin bank?

When a valve is open 281 gallons of water go through it in one hour the number of gallons that would go through in 94 hours is

∠a and ∠ b are complementary. if m∠ b = 80°, what is the measure of ∠ a? 10° 80° 90° 100°