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practice testMultiple Choice

Practice Test

Question 1 • Mathematics III

What is the range of the function y is equal to e to the x th power plus 1 graphed?

Answer
A
y is greater than 1
B
y is greater than 0
C
y is less than 0
D
y is less than 1

Explanation

For every real x, e^x is positive, so e^x + 1 is always greater than 1. As x decreases, e^x gets closer to 0, but never reaches it; therefore the range is y greater than 1.

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