6. Classify the following functions as exponential growth or decay. (4 pts)

a) f (t) = 250 (1.05t) b) f (t) = 175 (0.97t) c) f (x) = 20 (1.10) x d) f (x) = 320 (0.98) x

A) growth; B) decay; C) growth; D) decay

A is growth because the value of b raised to the exponent is larger than 1.

B is decay because the value of b raised to the exponent is smaller than 1.

C is growth because the value of b raised to the exponent is larger than 1.

D is decay because the value of b raised to the exponent is smaller than 1.