Gabriella is designing a flashlight that uses a parabolic reflecting mirror and a light source. the shape of the mirror can be modeled by (y+3)^2=26(x-2) where x and y are measured in inches. where should she place the bulb to ensure a perfect beam of light?

The bulb should be placed at the "focus point" of the parabolic mirror.





check the picture below.

bear in mind that, because the leading term's coefficient is positive, namely for y², the parabola opens to the right, and "p" is positive, therefore the focus point will be to the right of the vertex.

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.

Hello i think it’s 20