I got 11 of my 15 problems correct, what is the percentage

What is - 2b - 6 + 3b - 2 simplified?

Jin, Marco, and Myra each cut a length of wire for an electronics projects. Jin wires was 25 hundredths meter long, Marco was 6 tenths meter long and Myra's was 3 tenths meter long. Which one is longer? And who's is shorter?

What is the recursive rule for an=2n+11? a1=13; an=an-1+11 a1=2; an=an-1+11 a1=11; an=an-1+2 a1=13; an=an-1+2

Simplified form of 4 (20 12) divided (4-3)

What is 15 increased by a number b. In a mathematical expression

The length of a yearbook is 10 inches. The top margin is 1/2 inches and the bottom margin is 3/4 inch. What is the length of the page inside the margins?

Explain the difference between + 8, - 8, |8|

A bag of marbles contains 4 red marbles, 5 yellow marbles, 2 green marbles, and 7 blue marbles. You draw one marble from the bag. What is the sample space for this experiment?

A soccer ball weighs 6 ounces when fully inflated. Raymond has inflated the ball to 4 2/3 ounces. How many more ounces must be added before the ball is fully inflated?

What would 1 3/8 of an hour be?