Which expression has a value of 0?
a.
4 – 4 ÷ 4 + 4
b.
4 – 4 ÷ 4 · 4
c.
4 · 4 – 4 ÷ 4
d.
4 ÷ 4 – 4 + 4

What is the number 321,000,000 in scientific notation? also what is the number? ?

You work in a hospital that has 9 floors. you need to see 3 patients on each floor. how many patients do you need to see in all?

Wholesome food company has been hired to design a healthy menu for the cafeteria at ridgemont high school. they want to conduct a survey to determine what percentage of ridgemont’s 15001500 students like broccoli. the survey will ask, “do you like broccoli? ”