A calculator has 50 keys in 5 colors: gray, black, blue, yellow, and green. There is 1 yellow key for every green key. How many keys of each color are there?

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step-by-step explanation:

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f(x) is   are being squared

g(x) is   increasing by 2

h(x) is adding .25 each time

k(x) is taking the square root

f(x) and k(x) are exponential functions