Which of these is an equation?

A

9x - 7

B

(b + 7) x 3

C

4x + 9 = 45

D

(⅔)x - 3 > c

How many $20 bills do you need to have to make $280

Select the graph of the solution. click until the correct graph appears. |x| = 3

Given that y varies directly to the square root of (x + 1), and that y = 1 when x = 8,(a)express y in terms of .x,(b)find the value of y when x = 3,(c)find the value of x when y = 5.