SAT

2 September, 22:14

An exponential function is graphed in the xy‑plane. If the graph of the function is always decreasing and has a y‑intercept of 20, which of the following could be the function's equation?

A) y=-20 (1.75) ^x

B) y=20 (1.75) ^x

C) y=-20 (0.75) ^x

D) y=20 (0.75) ^x

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