I think dont get me wrong but i think 9??!!!!
X-intercept:
-3x + 4y = 24
Sub y = 0
-3x + 4(0) = 24
-3x + 0 = 24
-3x = 24
x = -8
y-intercept:
-3x + 4y = 24
Sub x = 0
-3(0) + 4y = 24
0 + 4y = 24
4y = 24
y = 6
Hope it helps :)
Answer:
2.57 might be right. If its not then I'm sorry
3x^3+0x^2-2x+k:x-2=3x^2+6x+10
3x^2-6x^2
6x^2-2x
6x^2-12x
10x+k
10x-20
k+20
Thus k=-20