What is the solution to the expression -2 - 3 - (-4)?

○-9
○-3
○-1
○5​

Helena lost her marbles. but then she found them and put them in 44 bags with mm marbles in each bag. she had 33 marbles left over that didn't fit in the bags.

What does independent variable and dependent variable mean in math?

Acyclist bike x distance at 10 miles per hour .and returns over the same path at 8 miles per hour.what is the cyclist average rate for the round trip in miles per hour ?