If f(x)=5x+6 what would you do to find f(3)

f(3) = 21

Explanation: To find f(3) or the value of the function when x = 3,

we plug in a 3 for the x in our function and we have 5(3) + 6.

Simplifying from here, we have 15 + 6 or 21.

So f(3) = 21.

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.

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step-by-step explanation:

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