Given the function: f(x) = 2x3 - 3/2x, find f(-4).
a) -134
b) -128
c) -126
d) -122

D) -122

Step-by-step explanation:

Given:

We need to find f(-4).

Now by substituting the value of x =-4 in above equation we get;

By using PEDMAS we will solve for exponential function first we get;

Now we know that

So we get;

Now using PEDMAS we will solve division.

Now using PEDMAS we solve multiplication.

Finally by subtraction we get;

answer: 48

just remember to use pemdas:

parentheses

expressions

multiplication

division

addition

subtraction

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.