8r and 4r are like terms since they both have an r
also 3s and -3s are also like terms because of the s
Answer:
![(x + 3) {}^{2} - 16](https://tex.z-dn.net/?f=%28x%20%2B%203%29%20%7B%7D%5E%7B2%7D%20%20-%2016)
Step-by-step explanation:
![{x}^{2} + 6x - 7 = (x + 3) {}^{2} - (3) {}^{2} - 7 \\ = (x + 3) {}^{2} - 16](https://tex.z-dn.net/?f=%20%7Bx%7D%5E%7B2%7D%20%20%2B%206x%20-%207%20%3D%20%28x%20%20%2B%203%29%20%20%7B%7D%5E%7B2%7D%20%20-%20%283%29%20%7B%7D%5E%7B2%7D%20%20-%207%20%5C%5C%20%20%3D%20%28x%20%2B%203%29%20%7B%7D%5E%7B2%7D%20%20-%2016)
You can get E real quick
how? you know that D is 90 and f is given 66 and you know that D+E+F=180 so E=180-(90+66) which gives us 24
B, 4% .
Find this by using the Interest Formula:
I = P X R X T
I = 7500 X .OO4 X 3
I = 900