You just have to plug in each thing:
So f(0):
3(0)^2 - 4 = -4
so its not A
f(-2) and f(2):
3(-2)^2 - 4
3(2)^2 -4
now we don't even have to calculate these, anything to the power of an even number is a positive number so -2^2 and 2^2 both equal 4
B is correct, so you can do the others if you want to check, but if B is true the others shouldn't be true.
Answer;
x = 7
Step-by-step explanation:
3(x - 1) - 4(5 - x) = 2(6 + x)
3x - 3 -20 + 4x = 12 + 2x
7x - 23 = 12 + 2x
7x - 2x = 23 + 12
5x = 35
x = 35/5
x = 7
The correct option is first option: x=t(y-4f)
Further explanation:
Given equation is:

In order to solve the equation for x, we have to isolate x on one side of the equation
Using Subtraction property of equality
Subtracting 4f from both sides

Multiplication property of equality
Multiplying both sides by t

Hence, the correct option is first option: x=t(y-4f)
Keywords: Linear equation, Equation solution
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Answer:
m=12
Step-by-step explanation: