Question

Which function is increasing a f(x)=(1/4) bf(x)=0.4)x c. f(x)=4x d. f(x)=(1/2)x

Answer 1

We are going to rewrite the functions correctly:
 f (x) = (1/4)
 f (x) = (0.4) ^ x
 f (x) = 4 ^ x
 f (x) = (1/2) ^ x
 We observe that we have functions of the form:
 f (x) = A (b) ^ x
 When
 b> 1 The function grows
 b <1 Function decreases
 Therefore, the function that is growing is:
 f (x) = 4 ^ x
 Answer:
 The function that is increasing is:
 f (x) = 4 ^ x
 option C)