Josiah scored 22 points in his basketball game including x 2-point baskets; y 3point baskets; and zfree throws, worth 1 point each. He total of 13 baskets, with three times as many 2-point baskets as 3point baskets. Which system of equations represents this situation

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 .