Professor Pinkard gives a physics test consisting of 20 questions. A student's grade is determined by the function g(x) = 4x + 20
where x is the number of correct answers and g(x) is the student's grade.
(a) Antonio answers 12 questions correctly. What is his grade?

(b) How many questions must Belinda answer correctly to receive a grade of 80?
correct answers

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

True or false? a circle could be circumscribed about the quadrilateral below.

With number 11 ( show how you got the answer)