Which of the following points lies on the graph of the function y = 3^x

a.
(1, 0)
c.
(3, 1)
b.
(2, 9)
d.
(0, 3)

B

Step-by-step explanation:

In this problem we have points of the form (x^0,y^0) cama Y0 what we must do is replace it of appointing a function Y = 3^x replace x^0 with x and y^0 with 1. The point belongs to the function only if the right side of the equality is equal to the left side

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