Which of the following phrases could represent the expression k - 4?
o a number subtracted from four
four less a number
a number decreased by four
a number les than four

the second one. a number decreased by four

Explanation:

"k" is known as 'a number. the expression k-4 is also known as a number minus 4. the word decreased replaces minus

yes

step-by-step explanation:

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: