Be sure you understand the use of function notation by working Exercise.
Professor Pinkard gives a physics test consisting of 25 questions. A student’s grade is determined by the function
g (x) = 3x + 25
where x is the number of correct answers and g (x) is the student’s grade.
(a) Antonio answers 15 questions correctly. What is his grade?
(b) How many questions must Belinda answer correctly to receive a grade of 88?
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