Answer:
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Step-by-step explanation:
Answer:
3x + 9 = 21
Step-by-step explanation:
Let Henry's age be x
Mary's age = 9 + 3x
21 = 9 + 3x
Can also be written as 3x + 9 = 21
Answer:
I would say 8
Step-by-step explanation:
I counted.
Answer:

Step-by-step explanation:
<u>Slope-intercept form:</u> y = mx+ b
m = slope
b = y-intercept
<u>Rearrange the equation:</u>

<u>Divide each side by -20:</u>


is your simplified, slope-intercept form equation.