13. Sam, Kendra, and Tony are standing in such a way that if lines were drawn to connect the friends they would form a triangle. If Sam is looking at Kendra he needs to turn his head 40° to
look at Tony. If Tony is looking at Sam he needs to turn his head 50° to look at Kendra. How
many degrees would Kendra have to turn her head to look at Tony if she is looking at Sam? Draw
a model of this situation, then answer the question.

Marco is studying a type of mold that grows at a fast rate. he created the function f(x) = 345(1.30)x to model the number of mold spores per week. what does the 1.30 represent? how many mold spores are there after 4 weeks? round your answer to the nearest whole number. 1.30 represents the number of mold spores marco had at the beginning of the study; 985 mold spores 1.30 represents the number of mold spores grown in a given week; 448 mold spores 1.30 represents the 30% rate of weekly growth; 345 mold spores 1.30 represents the 30% rate of weekly growth; 985 mold spores

Which expressions are equivalent to k/2 choose 2 answers: a k-2 b 2/k c 1/2k d k/2 e k+k

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2