You increase the size of a computer screen display by 20%. then you decrease it by 20%. what is the size of the computer screen display now?

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?

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?