George bought tickets for the school fair. The tickets cost $4 each plus a $5 handling fee. The total cost was $21. Let x represent the number of tickets George bought. Write an equation that represents George’s purchase.

To complete your spring schedule, you must add calculus and physics. at 9: 30, there are three calculus sections and two physics sections; while at 11: 30, there are two calculus sections and three physics sections. how many ways can you complete your schedule if your only open periods are 9: 30 and 11: 30?

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .