Match the quadratic f(x)=(x-3)?+9 to the correct minimum value

A-3
B 3
C -9
D 9

The answer is D. 64 = .80 * n; 80

Step-by-step explanation:

the word "is" in math means equal

the word "of" in math means multiply

So 64 is 80% of what? is saying 64 = 80%n

Let's turn 80% to a decimal, so that would equal 0.8

64 = .8n --> I used n because n is "what"

now you solve for n. Divide both sides by .8 and you get 80