Let f(x)=22−8−9. (i)Write down the coordinates of the vertex.

(ii)Hence or otherwise, express the function in the form f(x)=2(−ℎ)2+.

b. Solve the equation f(x)=0.

There appears to be a typo in your function.

Note: f(x) = 22-8-9 is not a function. The notation f(x) means there should at least one x on the right side. Repost.

b

step-by-step explanation:

the total is 23.97. 0.25% is off so you have to subtracting 25% from 100% and you will get 75% if you convert it to decimal you will get 0.75. you have to find the original because the formula is % times original = total.so you have the total and the % so you just have to plug it in.