Question

Can someone please help me? I’m stuck and don’t understand.

Answer 1

a) 4
`x^(2)` -4x + 1 = 0 (standard form. Just subtract 3 from both sides)

b) Vertex (
`(1)/(2)`,0)

c) c = 11

Explanation:

You got the line of symmetry correct.

Vertex looks good.

c) square both sides. solve for c.

Answer 2

I guess you are stuck with 7., because I don't see any notes there.

`√(2c + 3) = 5`

square both sides

`{ ( √(2c + 3) ) }^(2) = {(5)}^(2)`

the root and the square cancel each other

2c + 3 = 25

subtract 3 on both sides

2c = 22

devide by two on both sides

c = 11

hope this helps you. have a nice day:)