a number machine uses a rule to charge input numbers into output numbers. this number machine charged 4 into 16, 5 into 20, and 6 into 24. what number will 7 be cgarged into?
The function that we have in this is f(x) = 4x. We can see this in 4 * 4 = 16, 5 * 4 = 20 and 6 * 4 = 24. Therefore, following the pattern, 7 * 4 = 28.
