Answer:

Step-by-step explanation:
Use formula

Hence,

This expression is equal to

so we can equate the coefficients at powers of x:

Answer:
B. W = (P - 2L) / 2
Step-by-step explanation:
(I'm gonna use capitals so it's easier to identify length and width variables)
P = 2L + 2W
Isolate w:
P - 2L = 2W
(P - 2L) / 2 = W
Answer:
d. 15-(-18)
Step-by-step explanation:
Take the second point and subtract the first point
15 - (-18)
15 + 18
33
This really is left up to you as long as you have an odd number in the tens place and a 7 in the ones place. How big (or small) the number is is up to you. As long as it is at least 17, it's pretty much up to you.