Question

HELP ANYONE PLZZZ ?

1sr.
z(x)=x+1
If you input a 3 into z(x), what do you get for the output?

2nd.
n(x)=2/x
n(x) will give you an output for any number you use as an input except which of the following?
A. 0
B .3
C. 5
D. Trick question- you can get an output for every number you use as an input .

Answer 1

9514 1404 393

Answer:

1. 4
2. A. 0

Explanation:

1. Input 3 for x and do the arithmetic.

z(x) = x+1

z(3) = 3+1 = 4 . . . . . the output is 4

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2. The expression for n(x) has x in the denominator. The expression will be undefined when the denominator is zero, so x=0 cannot be used.