What is the area of a circle with an 18 inch radius and 7 inch diameter?

Which shows the pre image of triangle xyz

What is the factored form of the following expressions? d^2 – 13d + 36

Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655