Find the value or values of y in the quadratic equation y2 + 4y + 4 = 7. a. y = −2 + √ 7 , y = −2 − √ 7 b. y = 2, y = 7 c. y = −2√ 7 , y = 2√ 7 d. y = 2 + 2√ 7 , y = 2 − 2√ 7

Option A

The values of y are: or .

Step-by-step explanation:

Subtract 7 from both the sides:

On Simplify:

Solve with the quadratic formula:

For a quadratic equation of the form the solutions are:

For a=1, b=4 and c=-3 we have,

=

on solving we get, =

therefore, the values of y are:

or

histogram or dot plot?

step-by-step explanation:

0.85 or 85%

step-by-step explanation:

1) divide 23 by 27

2) round the decimal to the nearest 10

3) so your answer would be 0.85 or 85%