(r-9)(r+4)
r^2+4r-9r+36
r^2-5r+36
x + 4 = 12 Subtract 4 on both sides to get "x" by itself
x + 4 - 4 = 12 - 4
x = 8
A. y = 40x + 70
b. The x int can be found by subbing in 0 for y and solving for x
0 = 40x + 70
-40x = 70
x = -70/40 reduces to - 7/4 (or - 1 3/4 for graphing purposes).
It will appear on the graph of this equation because this is where the line crosses the x axis.
Answer:
2 answers
Step-by-step explanation:
factor: 2π(hr+π)
evaluate: 2π(hr+π)
hope that helps