1 - 3/10 as a fraction

The jewelry store is having a sale. necklaces that were regularly priced at $23.50 are on sale for $18.80. what is the percentage of decrease in the price of necklaces?

{0,1,2,3,4,5,6,20,21,22,23,24,25} the distribution is considered to be: skewed the right, skewed the left, not skewed?

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?