Find the average rate of change of f(x)=5x^2-3 from 3 to 9 will give brainlist

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin

What is the measure of angle x? a.101 b.158 c.44 d.79