<span>A 15° sector in a circle has an area of 11.9 m2. What is the area of the circle? The area of the circle will be found as follows: the fraction of the sector=15/360=1/24 the area of the circle will be: area=(fraction of the circle)/(fraction of the sector)*(area of the sector) =1/(1/24)</span>×11.9 =285.6 m²
Ok so your original equation was y=4(x-2)²-1 Therefore we need to expand the bracket to find the original equation. To do this we need to find (x-2)²=x²-4x+4 Now we multiply this by 4 and subtract 1 4x²-16x+15 Therefore B is the answer
