Question: this is for pre calculus I really need the answer for it I keep getting it wrong Suppose that f(x) = 7x (a) What is

this is for pre calculus I really need the answer for it I keep getting it wrong

Suppose that f(x) = 7x (a) What is f(4)? When x =4, what is the point on the graph of f? 1 1 (b) If f(x) = 49 what is x? When f(x) = 49 what is the point on the graph of f
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