find the value of f(-142) for the function below.
f(x) = -0.2(x + 223)
a. -186.6
b. 81
c. -16.2
d. 251.4

C. -16.2

Step-by-step explanation:

You replace x with -142 and get -0.2(-142 + 223) You either distribute then add together or add what's in parentheses and multiply.

the Answer is c because its the value for the function

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.