Please answer! If B = x - 9 and C = 2x + 5 + 5x2, find an expression that equals 2B + 2C in
standard form.

i dont know nkw

step-by-step explanation:

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question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!

step-by-step :

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13