The area of a rectangle is x^2 - 6x - 7 with a width of x - 7. What is the lenght?

Which number line represents the solution set for the inequality -1/2x> 24?

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

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