If f = { (2, - 4), (2, 7), (3, 5), (4, - 1), (8, 7) }, then f is a function. true or false?

Sean read 1/5 of a book in 1 1/2 hours. how long will it take sean to read 1/2 of this book? enter your answer as a mixed number in simplest form in the box.

Solve the mathematical puzzle. S is a three digit number. Determine the digits of S from the clues. All the digits are odd. The last two digits add to make ten. The first and last digits add to make eight. The first two digits add to make twelve.

Fred makes 2.50 less per hour than Barney. Barney makes 15.75 per hour. How much does Fred make per hour? 1) $14.75 2) $15.00 3) $13.25 4) $12.75

Emma is making small gift bags of tea. Each bag holds 1 3/4 ounces of tea and sells for $10.90 per pound. Her other supplies cost $0.39 per bag. How much profit (or loss) will she make per pound of tea

Got a question g + 3 over 6 = 15 what equals g?

Does the formula y = 9x + 1 describe y as the function of x

If you give the man $20 and she got $10.25 back how much was the item

Solve the linear inequality: - (8x-9) / 3+6≥9

What is 19 of 40 in a fraction

The answer to a division problem is less than a divisor