PLEASE HELP IF ANYONE KNOWS HOW TO DO THIS PLEASE HELP! Given the function:
f(x) = -2° + 2x² - 4

a) Explain how to evaluate f(-4). Include the value in your description.

b) Explain how to evaluate f(-3). Include the value in your description.

C) True or False? A zero of f(x) lies on the interval (-4,-3). Explain how you came to this conclusion.

system of linear equation

step-by-step explanation:

as given in the data

a= 20 , b= -12

let us suppose that it is a straight line equation

now we know the formula for the system of linear equation

b= ma + c )

here m is slope of a straight line which is equal to formula

m=   (ii)

and here c is a constant

now putting the value of a and b in equation (ii)

m=

m=

putting the value of a,b and m in equation (i) gives us

-12 = + c

-12=-12 + c

adding 12 to both sides

-12 +12 = -12 +12 +c

0 =c

or c=0

as the value of the constant is zero which gives us that it is a linear equation and this order pair satisfies the system of linear equations.

85.3-64 = 21.3

so laura has already added 85.3 grams of chocolate powder and she has gone over the amount specified in the recipe by 21.3 grams

hope i ! have a great  day!

answer is b 270°

i got it down for you chief.