Answer:
b is 63, not -63
Step-by-step explanation:

<u>Given expression is </u>

can be rewritten as

We know,

And

So, using this identity, we


can be further rewritten as





<u>Hence, </u>

Answer: D.
Step-by-step explanation:
1. Look at the range/IQR of each box-plot
2. The smaller the range = the less variability
Answer:
30
Step-by-step explanation:
Answer:
8x-2
Step-by-step explanation:
l = x+4
w = 3x-5
The perimeter is
P =2(l+w)
= 2(x+4+3x-5)
Combine like terms
= 2(4x-1)
Distribute
= 8x-2