Which function represents the given graph?

The first equation, f(x)=100(3/5)^(x), represent the graph

The correct answer is A) f(x)=100(3/5)^(x)

Step-by-step explanation:

The given graph represents the function f(x)=100(3/5)^(x), this can be determined by using a graphing calculator, which will result in the image shown in the question. Good luck!

is there any photos or whatever?

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