Karim wants to buy a shirt that normally sells for $46.50. It is on sale for 3 off. How much does Karim need to pay to buy the shirt on sale?
$15.50
$22.50
$31.00
$41.50

50 will mark show all use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2x+9y= -26 -3x-7y=13

Arectangular courtyard is 12 feet long and 8 feet wide. a tile is 2 feet long and 2 feet wide. how many tiles are needed to cover the courtyard?

What are the solutions of the equation x4 + 6x2 + 5 = 0? use u substitution to solve.