If a tree casts a 45-foot shadow at the same time that a 6-foot tall man casts a 7.5-foot shadow, find the height of the tree. 1 ft

36 ft

45 ft

56.25 ft

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

Formulate alisha has a number in mind. if she adds three to her number the result is less than five. use this information to write and solve an inequality about alisha's number. then graph the solution set.