Question

The function f(x) = 6.50x + 18 relates how much Sam pays to his tennis club, f(x), to the number of matches, x, he earns in a month. What is the value and meaning of f(10)?

Answer 1

f(x) -> f(10), so x=10 in the equation. You will plug in x and solve.
f(x) = 6.50x + 18
f(10) = 6.50(10) + 18
f(10) = 83

Therefore, Sam pays a total of $83 to his tennis club in a month.