Mr. li fills his car with gas. the farther he drives, the less gas his car has. would it be reasonable to use this negative association to predict the amount of gasoline in mr. li's tank after he has driven 500 miles? explain.

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

Emily is entering a bicycle race for charity. her mother pledges $0.90 for every 0.75 mile she bikes. if emily bikes 18 miles, how much will her mother donate?

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.