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Hi there!
We can find the zeros of a function by solving f(x) = 0. We find the following:

Add 300 to both sides.

Divide by 3.

Take the root and minus root of both sides.

Therefore, the zeros are
x = 10 and x = -10.
~ Hope this helps you!
Answer:
the answer is 
Step-by-step explanation:
I hope this helps! :)
Try using Symbolab, I use it all the time it gives the correct answer and it gives good explanations.
The equation for the circumference is 2*pi*radius
if you are given the circumference then divide both sides by pi
that is because the diameter is 2 times the radius
so you can rearrange the equation to
C = pi * 2 * r
C = pi * d
divide both sides by pi
C/pi = d
Hope this helps :)
Answer:
5x + 9
Step-by-step explanation:
f(x) = 3x+4
g(x) = 2x + 5
(f+g)(x)
(3x+4) + (2x + 5)
= 5x + 9
// however I'm unsure