The selling price of an item is $550. it is marked down by 30%, but this sale price is still marked up from the cost of $350. find the markup from cost to sale price.

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

Which of these numbers of simulations of an event would be most likely to produce results that are closest to those predicted by probability theory? 15, 20, 5, 10

Amayoral candidate would like to know her residents’ views on a public open space before the mayoral debates. she asks only the people in her office. her co-workers are an example of a census population convenience sample simple random sample