Abox of greeting cards contains 20 birthday cards, 15 get-well cards, and 15 -you cards.

find the percent of each type of card in the box.

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.

Ireally need subtract and simplify.(-y^2 – 4y - 8) – (-4y^2 – 6y + 3)show your work, ! i will mark you brainliest but you have to show your work.

X-10/4 when x = –18 a 7 b –2 c –7 d 2