Answer: Option a.
Step-by-step explanation:
By definition, a functioon is even when:

And it is odd when:

Therefore, you can verify if the function is even substituting -x into the function:

Then:

It is an even function.
Given:
The function is:

To find:
All the possible rational zeros for the given function by using the Rational Zero Theorem.
Solution:
According to the rational root theorem, all the rational roots are of the form
, where p is a factor of constant term and q is a factor of leading coefficient.
We have,

Here,
Constant term = -2
Leading coefficient = 10
Factors of -2 are ±1, ±2.
Factors of 10 are ±1, ±2, ±5, ±10.
Using the rational root theorem, all the possible rational roots are:
.
Therefore, all the possible rational roots of the given function are
.
You'll have to multiply 0.7 by 120.
120*0.7 = n
n is the number that is 70% of 120
120 * 0.7 = 84
Hope this helps :)
Yep! Refer to the other girl :)))