Consider the following regression equation: y = 0+1x1+…k xk+ u In which of the following cases, is ‘y’ a discrete variable? a. y indicates the gross domestic product of a country b. y indicates the total volume of rainfall during a year c. y indicates household consumption expenditure d. y indicates the number of children in a family

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:

b. f(x) = –√x + 3this is the correct answer