If f(x) = 3x2 - 2x + 5, find f(-2)
a) -27
b) -11
c) -3
d) 21

D

Step-by-step explanation:

You have to be careful that you treat 21 as special. It is the only positive number. As you do the problem, keep an eye on 21.

f(-2) = 3x^2 - 2x + 5                Put -2 wherever you see an x

f(-2) = 3(-2)^2 - 2(-2) + 5         Calculate the first term.    

f(-2) = 3(4) - 2(-2) + 5              Remove the brackets of the second term

f(-2) = 12 + 4 + 5                     Combine

f(-2) = 21

450

step-by-step explanation:

you get texts and minutes, so why not

an

y = 6x -3y -12

y +3y +12 = 6x

=> . x = { 2y / 3 +2 } this is equation of line in terms of x

=> . if line meets the x-axis the co-ordinates of meeting point would be ( x , 0 )

=> . x = 2 ( 0 ) / 3 + 2

=> . x = 2

so, the point is ( 2 , 0 )