f(x)= -3+ 8x^2 A function is shown.

What is the value of `f\left(5\right)?`

is it 126

1 answer

To evaluate f(5) for the function f(x)=3+8x2, we will substitute x=5 into the function.

f(5)=3+8(52) First, calculate 52: 52=25 Now substitute that back into the equation: f(5)=3+8(25) Next, calculate 8×25: 8×25=200 Now plug that value into the equation: f(5)=3+200 Finally, simplify: f(5)=197

So, the value of f(5) is 197, not 126.