4. The graph shows a proportional relationship between the number of hours an employee works and the amount of money earned in that time.
Employee's Hours
and Earnings
Eamings ($)
200
1HO
160
140
120
100
80
60
40
20
0 1 2 3 4 5 6 7 8 9 10
Number of Hours
Part A
Complete the statement to describe the meaning of the point shown on the graph.
The employee makes $
in
hour(s).
Part 8
Complete the equation that represents this situation.
y

the answer is the first one your welcome

true

step-by-step explanation:

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15