F(x) = 5(x)^2 + 4
F(5) and F(2)
f(5)=5(5)^2+4
f(5)=5(25)+4
f(5)=125+4
f(5)=129
f(2)=5(2)^2+4
f(2)=5(4)+4
f(2)=20+4
f(2)=24
Those are correct. Is that what you wanted to ask?
yes and thank you
The speed of a bicyclist is 10mph faster than the speed of a walker. If the bicyclist travels 26 miles in the same amount of time that the walker travels 6 miles. Find the speed of the bicyclist.
To evaluate F(x) at a specific value, you need to substitute that value into the expression for F(x) and simplify.
For F(5), you would replace every instance of x in the expression 5(x)^2 + 4 with 5:
F(5) = 5(5)^2 + 4
F(5) = 5(25) + 4
F(5) = 125 + 4
F(5) = 129
Similarly, for F(2), you would substitute 2 into the expression:
F(2) = 5(2)^2 + 4
F(2) = 5(4) + 4
F(2) = 20 + 4
F(2) = 24
So, F(5) = 129 and F(2) = 24.