4/7 = 16/x what is the missing number

What is the value of x? 14-x=21

Which of the following relations represents a function? { (4,2), (4,3), (4, 5), (4,7) } { (-2, 1), (0,5), (1, - 3), (-2, 0) } { (-1, 3) (-2, 3) (-1, 5) (-2,5) } { (-3, 1), (1, 4), (-2, 1), (0, 3) }

Your family goes out to Chili's for dinner. Chili's charges $9 for an adult dinner and $5 for a child's plate. Ten members of your family went to dinner and your bill was $66. How many adults and children ate at Chili's?

What is 5/12 - 5/18

Lindsay needs to purchase a car. The car she is planning on purchasing costs $8000 and she has $2000

Raj paid $5.04 for 6 cookies. Heath paid $4.00 for 5 cookies. Which of the following statements is true? A.) raj paid more per cookie B.) heath paid more per cookie C.) they paid the same amount per cookie

How do you solve equations of the form ax=b

Teresa graphs the following 33 equations: y=2x, y=x2+2, and y=2x^2. She says that the graph of y=2^x will eventually surpass both of the other graphs. Is Teresa correct? Why or why not?

What number can you multiply by 2 to get 256

Of the 80 houses in a development, 50 have a two-car garage, 40 have an in-the-ground swimming pool, and 35 have both a two-car garage and an in-the-ground swimming pool.