Which relation is a function? {(1, 2); (2, 3); (3, 4); (1, 5)}

{(1, 2); (1, 3); (3, 2); (4, 2)}

{(1, 2); (2, 5); (3, 2); (4, 5)}

{(1, 2); (2, 3); (3, 4); (2, 5)}

You are updating your garage and the only thing left to paint is your garage day. you're only going to paint the slide that faces the street. the garage door is 9 fert 8inches tall and 120 inches wide. you need to know the surface area of the side of the garage door to determine how much paint to buy. the hardware store sells paint by how much covers a square foot. what is the surface area you should report to the hardware store what is the answer

The table shows the number of students who signed up for different after school activities. activity students cooking 9 chess 4 photography 8 robotics 11 select the true statements about the information in the table.

Sam opened a money-market account that pays 3% simple interest. he started the account with $7,000 and made no further deposits. when he closed the account, he had earned $420 in interest. how long did he keep his account open?