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SIZIF [17.4K]
3 years ago
8

Jake and Mike took a different number of tests. Jake scored 85 points on each test. Mike's total score was 15 less than Jake's t

otal score. The following expression shows Mike's total score: 85x − 15 In the expression, what does the variable x represent? (5 points) Select one: a. The total number of tests Mike took b. The total number of tests Jake took c. The sum of Jake's and Mike's total score d. The difference between Jake's and Mike's total score
Mathematics
2 answers:
Hitman42 [59]3 years ago
5 0
X would represent the total number of tests Jake took
ddd [48]3 years ago
4 0
In your equation 85x - 15 . . . . 

 - The 85 is the score that Jake makes each time. 
 - The x is the number of tests Jake takes. 
 - And the -15 means that you would subtract 15 from Jake's total score (85x) 
 - All this will equal your answer to the equation which is Mikes total score. 

The question is asking what does x represent. 
Therefor the answer would be B. The total number of tests Jake took

Hope this helps! :)
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3 years ago
Graph the solution to this system of inequalities in the coordinate plane.
Vsevolod [243]

By using Geogebra online graphing calculator, the solution to this system of inequalities are plotted in the image attached below.

<h3>What is an inequality?</h3>

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2 years ago
Use a table of values with at least 5 values to graph the following function:
34kurt

The given expression :

y=(\frac{1}{2})^x

For coordinates:

put x = 0 then :

\begin{gathered} y=(\frac{1}{2})^0 \\ y=1 \end{gathered}

Coordinate : (x, y) = (0, 1)

Put x= 1 and simplify :

\begin{gathered} y=(\frac{1}{2})^1 \\ y=\frac{1}{2} \\ y=0.5 \end{gathered}

Coordinate : (x, y) = ( 1, 0.5)

Put x = (-2) and simplify :

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Coordinate : (x, y) = ( -2, 4)

Put x = (-3) and simplify :

\begin{gathered} y=(\frac{1}{2})^{-3} \\ y=\frac{1^{-3}}{2^{-3}} \\ y=\frac{2^3}{1^3} \\ y=2^3 \\ y=8 \end{gathered}

Coordinate : (x, y) = (-3, 8)

Substitute x = (-1) and simplify :

\begin{gathered} y=(\frac{1}{2})^x \\ y=(\frac{1}{2})^{-1} \\ y=\frac{1^{-1}}{2^{-1}} \\ y=\frac{2}{1} \\ y=2 \end{gathered}

Coordinate : (x, y) = ( -1, 2)

So, the coordinates are :

The graph is :

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