Which relation is a function?

O {{7, 12), (1, - 5), (3, - 10), (2, - 5) }

O { (-3, 4), (-2, 5), (0, 9), (0, 12) }

{ (1, 2), (1, 5), (1, - 1), (1, 4) }

{ (8, - 1), (2, - 1), (3, 8), (2,5}

What is the answer to 10 - s when s = - 3

How much is 7.25 kg at $20 per kilogram?

Tom Thomas took tennis lessons. He traveled 12 miles one way at an average cost of $0.42 per mile. His racket cost $94, balls cost $12.50, shoes cost $44.50, his warm-up was $34, and his shorts were $19.95.

2/25 of the current delivered to an induction motor is wasted as reactive current. Express this fraction in decimal form.

A pattern has 6 blue triangles to every 42 yellow triangles. Whta is the ratio to yellow triangles to blie triangles?

What is 3/5 in two equivalent forms

A group of 120 students were asked how old they were when they lost their first tooth. 50% said they were 7 years old. How many students said they were 7 years old when they lost their first tooth? Explain.

In the Income section shown below from the 1040EZ form, a married couple filing their federal income tax return jointly entered $0 on line 6 for their taxable income.

Every used to make $22 an hour, but got a 10% raise. How much more will he make in a 40 hour work week with the raise?

Find the output, y, when imput, x, is - 1