Answer:
The third option is correct I believe. x ^2 + 2x
Answer:
C, 6!
Step-by-step explanation:
so h(x) is 21
21=2x+9
12=2x
x is 6
I hope this helps you
x^2=50
x= 5 square root of 2
Describing Linear Relationships
So graphing a linear equation in fact only requires finding two pairs of values and drawing a line through the points they describe. All other points on the line will provide values for x and y that satisfy the equation. The graphs of linear equations are always lines.