The elevations, in feet, of three cities are marked on the number line shown below. The point 0 on the number line represents sea level. Which statement must be true?

A
City P and City Q are above sea level.

B
City Q and City R are below sea level.

C
City P is above sea level and City Q is below sea level.

D
City P is above sea level and City R is below sea level.

answer: 48

just remember to use pemdas:

parentheses

expressions

multiplication

division

addition

subtraction

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: