C957 Unit 2 Module 1 With detailed accurate solutions and graded A+

Many medical studies have shown a relationship between fast-food consumption and an increase in cholesterol. Which variable is the dependent variable? A) Fast-food consumption B) Cholesterol increase - ANSCholesterol increase What describes a quantitative variable? A) Dog breeds B) Primary colors (red, blue, and yellow) C) Populations of cities in the United States D) States in the United States - ANSStates in the United States The distance in miles that a car drives can be represented by the function D(g)=28g, where g is the number of gallons of gasoline. If you drive 224 miles, how much gas do you use? A) 28 gallons B) 8 gallons C) 6,272 gallons D) 252 gallons - ANS8 gallons The price of gasoline is $2.50 per gallon. The cost, C, can be represented by the function C(n)=2.5n, where n is the number of gallons of gasoline. What is the inverse function? A) The inverse function gives the price of gasoline as a function of the number of gallons of gasoline. B) The inverse function gives the number of gallons of gasoline as a function of the cost when the price of gasoline is $2.50 per gallon. C) The inverse function gives the cost as a function of the number of gallons of gasoline, when the price of gasoline is $2.50 per gallon. D) The inverse function gives the number of gallons of gasoline as a function of the cost when the price of gasoline varies. - ANSThe inverse function gives the number of gallons of gasoline as a function of the cost when the price of gasoline is $2.50 per gallon. You own a blog. You earn 12% commission on sales whenever a visitor clicks on an ad and purchases something. Let C(s) represent the amount you earn from commission on sales, and let s represent your total sales. Which function represents the amount you earn from the sales commission? A) C(s)=12s B) C(s)=0.12s C) C(s)=12+s D) C(s)=0.12+s - ANSC(s)=0.12s