Answer: 10
Step-by-step explanation: 20-10=10, 30-20=10, 40-30=10.
<h2>
Answer:</h2>
First, we must determine <u><em>b</em></u> using <u><em>slope-intercept form*</em></u>, the given point, and the given slope.

Second, we need to set up the equation of the line in slope-intercept form.

Third, we convert the above equation to <em>STANDARD FORM**</em>.

We now have our equation: 
*Slope-intercept form: <em>y = mx + b</em>
**Standard form: <em>ax + by = c</em>
Answer:
or 
Step-by-step explanation:
When we have an exponent that is a negative, it is the same thing as 1 over the positive exponent. So, we move 9^-3 into 1/9^3 and then we evaluate the exponent to get our answer.
14x is the difference between 23x and 9x.