Question

17)
x f(x)
-4 5
-3 0
-2 -3
-1 -4
0 -3
1 0
2 5

Kara creates the table shown to represent the function ƒ(x) = x2 + 2x - 3.

Determine the zero(s) of the function.


A)
x = -3


B)
x = -2 and x = 0


C)
x = -3 and x = 1


D)
x = -4 and x = 2
18)
Simplify.
3(2x + 4y - 2z) + 7(x + y - 4z)


A)
13x + 5y - 22z


B)
-x - 19y + 22z


C)
13x + 19y - 34z


D)
-x - 5y + 34z
19)
Solve the quadratic equation by completing the square.

x2 + 6x - 5 = 0


A)
x = 3 ± 14



B)
x = 1 ± 11



C)x = -1 ± 11

Answer 1

using the quadratic formula...
17) C
18) C

Answer 2

19) A