If something was 200 dollars and i got it for 80 how much was it off

A certain one-day seminar consisted of a morning session and an afternoon session. If each of the 128 people attending the seminar attended at least one of the two sessions, how many of the people attended the morning session only?

Compare the graph of g (x) = - 1/2 (x + 6) ^2 + 3 to the graph of f (x) = x^2

Use the zeros of the following quadratic to find the x-value of the vertex. y=x^2-2x+1 A. 1 B. - 1 C. - 2 D. 2

The florist makes the greatest number of identical arrangements with the lilies and the daisies. Which combination describes the arrangements?

4x^2-12+9=0 complete the square

Kim sold 20% of the 30 boxes of candy she had to sell. What PART of the candy did Kim sell?

Which would be appropriate compatible numbers to use to estimate (19 4/5) (4/6) A. 16 (1/3) B. 19 (2/3) C. 20 (1/2) D. 20 (1)

According to an airline, flights on a certain route are on time 85 % of the time. Suppose 17 flights are randomly selected and the number of on-time flights is recorded. (a) Explain why this is a binomial experiment.

Is 0.9 0.06 11/20 0.21 greater than 1/2 or smaller

Lynn used 3/8 cups of flour and 1/3 cup of sugar in a recipe what number is a common denominator for 3/8 and 1/3