The graph shows the linear relationship between the height of a plant (in centimeters) and the time (in weeks) that the plant has been growing. Which statements are correct? Check all that apply.

The rate of change is 4.
The rate of change is 1.
The rate of change is 4/1 .
The plant grows 4 cm in 1 week.
The plant grows 1 cm in 4 weeks.

b) the dogs need to shift their focus to human scent.

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

30005

yes ok