How do I open the math catagory

A football team loses 3 yards and then loses 4 yards. how many yards did they lose

Richard can do a job in eight hours that Randy needs 13 hours to do. If Brandon works four hours before Richard joins him how long does it take the two of them to finish the work?

Simplify - 3 (z-11+6z)

Which of these values represents the longest period of time? A. 60 hours B. 60,000 milliseconds C. 6,000 minutes D. 6 days

What is 31/10 as a mixed fraction

X^2=7x in quadractic formula

Combine like terms to simplify the expression: 6 - 2x + 8 + 3x

List all the multiples of 8 that are less than or equal to 100. List all the multiples of 12 that are less than or equal to 100. What are the common multiples of 8 and 12 from the two lists?

What is the next number in the arithmetic sequence below? -2, 5, 12, 19, 26, ___, ...

11 M - 30 from 20 m + 30