Askirt that usually sells for $40 is on sale for $30. what is the discount percent?

Hi my sisters and brothers can tell me the answer because i don’t understand the question

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2

Drag each equation to the correct location on the table. for each equation, determine the number of solutions and place on the appropriate field in the table.