Jerry makes 20$ an hour. He spends 30 dollars a day on transportation and food. Write an expression to describe his spending and earnings for the day, where x is the number of hours that Jerry works that day.

What is the solution to the following system 4x+3y-z=-6

A figure has a length of 10 cm, a width of 7 cm, and a height of 3 cm. What is its surface area?

2) What is 3,765.248 rounded to the nearest tenth?

if 2 political opinion surveys of about 3000 people each give results as 45% will vote No the other 50% will vote No，and there stated estimated errors are each ＋/－3%， can they be said to agree with each other? support your answer.

Determine the constant of variation for the direct variation given. R varies directly with S. When S is 16, R is 80. 1/5 5 16

In a school gym, the ratio of the number of boys to girls was 4:3. After 160 boys left the gym, the ratio become 4:5. How many girls were there in the gym

Explain how a hypothesis may become a theory.

Seven subtract three b plus four subtract five b

Solve the equation for x: 4-3/2x = 16 MIN

How can the associative property be used to mentally solve 48+82?