Question is in the picture, please help.

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

Iwill give you ! what is the measure of ∠v ?

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