EmpyrealBlue
EmpyrealBlue EmpyrealBlue
  • 02-09-2016
  • Mathematics
contestada

Evaluate f(x) = -2x² -4 for x=3

A. -10
B. 10
C. -18
D. -22

Respuesta :

Willchemistry
Willchemistry Willchemistry
  • 02-09-2016
f(x) = - 2 x² - 4 for x = 3

f(3) = - 2*3² - 4

f(3) = -2*9 - 4

f(3) = -18 -4

f(3) = -22

Answer D

hope this helps!
Answer Link
SyntaxError
SyntaxError SyntaxError
  • 02-09-2016
[tex]f(x) = -2x^2-4 \\ f(x) = -2(3)^2-4 [tex][plug in 3 into your x value][tex]\\ f(x)=-18-4[tex] [3 squared equals 9. Now multiply 9*(-2) = -18[tex]\\ f(x)=-22 [ -18-4][/tex]
Answer Link

Otras preguntas

Point m is the midpoint of segment QR. If QM=16+x and MR=2(2x+2), find the length of QM Answer choices: QM=12 QM=-12 QM=28 QM=56 Thank you!!
Find the value of x for these. Geometry
There are about 20 school days in a month. About how many miles does Manuel walk each month? Write an equation to show your work.
Attach Parts A, B and C from Workfile Part II: 4.08 Written Discussion - After posting your message to the discussion area, type "I have posted my message on th
40) Upton Sinclair and Ida Tarbell are both associated with what American literary movement? A) Muckrakers B) Lost Generation C) Transcendentalism D) Har
n the following diagram, points C, A, and B are collinear. Use complete sentences to describe the sum of CA and AB
How does a thermometer work?
I need Help Don't know
Fill in the blanks with the correct present tense form of the reflexive verb in parentheses. Remember there are two parts to a reflexive verb. Ricardo y Teresi
If ey/n + k = t, what is y in terms of e, n, k, and t? (A good explanation would be appreciated)