What do you call A relation in which each element of the domain is paired with exactly one element of the range

A road crew is widening a street that is 36 feet wide. Their scale drawing says that the new street has to be 125% of the width of the current street. How wide should the new street be?

Write 375 as the product of prime factors (index form)

Six times the sum of a number and twelve is forty.

Suppose you roll a die two times. what is the probability of rolling a 3 both times?

Suppose the series Σ cn xn has radius of convergence 2 and the series Σ dn xn has radius of convergence 3. What is the radius of convergence of the series Σ (cn + dn) xn?

Rileys parents got a cell phone plan that has a $40 monthly fee for the first phone. For each extra phone, there is a $15 phone service charge and a $10 text service charge.

Two planes are 1380 miles apart and traveling toward each other. One plane is traveling 80 mph faster than the other plane. The planes pass each other in 1.5 hours. Find the speed of each plane.

Timani bought a video game console and some game for $350. The video game console cost $200. Each game cost $25. How many games did Timani purchase?

Mr. Bush has a rectangular vegetable garden that is 6 meters and 5 meters wide. What is the area of his garden?

Amanda just took out a loan for $950 at a 7.2% APR, compounded monthly, to buy a new set of tires for her car, and she has agreed to make monthly payments of $38.50 to pay off the loan. If she changes her monthly payment to $93.