Answered

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What is the range of the exponential function shown below?
f(x) = 2 •7*
A. All real numbers
B. y<0
C. All real numbers except 2
D. y> 0

Sagot :

etanauriel

Answer:

D

Step-by-step explanation:

your function is not very clear but I'm assuming it's 2 multiplied by 7^x

first let y be equal to the function

to find the range interchange x and y and make the subject

at some point you'll have to use logarithm to get rid of the exponent

only log of positive numbers numbers exist hence y must be greater than 0

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