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;

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!