20. Which expression represents the missing second step of simplifying the algebraic expression?

Step 1 4(x – 3y) + 6 + 5(x + 1)

Step 3 9x - 12y + 11

A. 4x - 3y + 6 + 5x + 1

B. 4x – 12y + 6 + 5x + 5

C. 12(x - y) + 6 + x + 5

D. x - 3y + 15 + x + 1

the correct answer to your question is a. 4^4

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answer: what are the following choices

answer: solve 5\cdot 2^x=2405⋅2  

x

=2405, dot, 2, start superscript, x, end superscript, equals, 240.

solution

to solve for xxx, we must first isolate the exponential part. to do this, divide both sides by 555 as shown below. we do not multiply the 555 and the 222 as this goes against the order of operations!

\begin{aligned} 5\cdot 2^x& =240 2^x& =48 \\ \end{aligned}  

5⋅2  

x

2  

x

​    

=240

=48

​

step-by-step explanation: