How to find if a function is positive or negative?

Jerry earned $16 doing his chores last week. On Monday, he bought a football that cost $11. Which number is the additive inverse of the amount of money Jerry has left?

A container holds 2 gallons of lemonade. How much is this in pints?

Margaret gat a 7/23 balloon mortgage and her initial payments were $915. She decided to refinance her balloon payment with a 30 year mortgage and her new payments were $895. What is the total financed cost she paid for her house? A. $337,320 B.

The product of two positive consecutive odd numbers is 323. Find the numbers

The assembly room has 6 rows with 30 chair in each row. If third grader fill 3 rows, how many third grader are in the room?

Angie has a jar that contains 2 red marbles, 2 blue marbles, and no other marbles. She randomly draws 2 marbles from the jar. If the marbles are the same colour, she discards one and puts the other back into the jar.

Henry had charges 933 dollars to his credit card. Even after the cost of his net purchase, he was still under his credit limit of 1500 dollars. Write a mathematical sentence that expresses the information

On Tuesday a local hamburger shop sold a combined total of 264 hamburgers and cheeseburgers. The number of cheeseburgers old was two times the number of hamburger sold. How many hamburgers were sold?

I do not understand how to simplify 5y-8x-y+12x

Four times a number is 21 more than the number