Since <em>x</em> ² + 8<em>x</em> + 7 = (<em>x</em> + 7) (<em>x</em> + 1), we have for <em>x</em> ≠ -7,
<em>y</em> = (<em>x</em> + 7) / (<em>x</em> ² + 8<em>x</em> + 7) = 1/(<em>x</em> + 1)
so <em>y</em> is undefined at <em>x</em> = -1, indicating a vertical asymptote, and there is a hole/removable discontinuity at <em>x</em> = -7. Then the answer is D.
Y = 7x, if x equals the number of hours and y equals the amount of money charged.
The diameter is twice the radius (D=2R), then
Answer: I choose B and A.
Step-by-step explanation:
B because it shows how to divide and then multiplies x by 15 to get the answer. A because it divides 9 by 100 and then it shows x and 15 percent plus One more.
So first divide the equation on both sides by 3. We get

. Slope-y-intercept form is of the form

. Rearranging

, we get

. Divide by two, we get

, which is of that form.
Graphing: The y intercept is at -2, and the slope is 1/2.