Vladas believes that an equation with a squared term is never a function of x. which equation can be used to show vladas that his hypothesis is incorrect? x + y2 = 25 x2 – y = 25 x2 + y2 = 25 x2 – y2 = 25

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g