Find the percent of increase from 4.5 inches to 13.5 inches.

65 pts, I really need to know HOW to do it.

THANK YOU! :)

Aclass consists of 55% boys and 45% girls. it is observed that 25% of the class are boys and scored an a on the test, and 35% of the class are girls and scored an a on the test. if a student is chosen at random and is found to be a girl, the probability that the student scored an ais

Sole with work in 10 years, the average number of hours of tv watched per week by teenagers dropped from 23.9 to 21.4. find the percent of change.

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x