Question

Which graph best shows the function f(x) = 3(3)-x to represent the rate at which a radioactive substance decays?

Answer 1

this is the equation of a line
f(x)=9-x
y=9-x
You could find the graphic giving some valors. For example:
For x=0 which is the valor of y?
y=9-0=9
so , now you have one point of your line (0,9)
For y=0
0=9-x
x=9
Other point (9,0)

Answer 2

you guys have got to draw out your equations, or use the ^ symbol for exponents and use parentheses.

Answer 3

Pretty sure that's supposed to be an exponential function not linear

Answer 4

lol