# Project #63519 - Math 105 Quiz 3

1  of 20

Solve for x.

8x - 7x = 18

 -18 0 18

## Question

2  of 20

Solve for p.

 -384 -96 96 384

3  of 20

The graph shows the hours studied and the exam grades obtained on a finite math exam for 8 students. (The two points on the line do NOT represent any of the eight students.) The line of best fit, the line graphed on the coordinate system, can be used to approximate the test grade the average student receives for the number of hours they study.

Find the equation of the line of best fit.

4  of 20
Graph the equation using the slope and y-intercept.

Question

5  of 20

Determine whether the value is a solution to the equation.

2x2 - x + 9 = 37

x = 4

 Yes No

6  of 20

Determine whether the graph is the graph of a function.

 Yes No

## Question

7  of 20

Solve the formula for the specified variable.

for n
 n = IR(Ir - E)

8  of 20

Combine like terms.

-3(8r + 6) + 4(5r + 2)

 -42r -4r - 10 -4r + 6 5r + 3

9  of 20

Evaluate.

2x3 + 2x2 + 11

for x = -3

 -49 -37 -35 -25

10  of 20

Translate the statement into a mathematical equation.

3 times a number is 2 less than 4 times the number.

 3x = 2 - 4 3x = 2 - 4x 3x = (2 - 4)x 3x = 4x - 2

1  of 20

Find the vertex of the parabola.

f(x) = 5x2 - 30x + 40

 (-5, 3) (-3, -5) (-3, 5) (3, -5)

## Question

12  of 20

Determine whether the ordered pair is a solution to the equation.

 Yes No

13  of 20

Write the mathematical expression as a phrase.

x - 9

 9 increased by x 9 decreased by x 9 less than x x less than 9

14  of 20
Translate the statement into a mathematical equation.

The sum of 4 times a number and 4, then divided by 2, is 2.

15  of 20
Solve the formula for the specified variable.

S = 2πrh + 2πr2     for h
 h = S - r h = 2π(S - r)

16  of 20

Evaluate.

7x2 + 9y

for x = 3, y = 10

 153 531 727 1,260

17  of 20
Graph the equation by plotting points.

18  of 20

Indicate whether the relation is a function.

{(2, 3), (2, -3), (4, 2), (8, -4), (10, 9)}

 Yes No

## Question

19  of 20
Find the value of the indicated variable for the values given.

;  determine C when F = 104°

 37° 39° 40° 45°

20  of 20

Determine whether the values are a solution to the equation.

y = x3 + 2x - 8

x = 2,  y = 25

 Yes No

 Subject Mathematics Due By (Pacific Time) 03/30/2015 12:00 am
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