Alex got a new car and wanted to see what kind of gasoline gives him better as mileage. He started out by putting in 16 gallons of Regular gasoline and was able to travel 380 miles. When his gas tank was on empty he decided to try putting in 18 gallons of Super gasoline and was able to travel 432 miles. Which gasoline give Alex the better mileage per gallon, Regular or Super? HELP ASAP ​

Which graph corresponds to the function f(x) = x2 + 4x – 1?

Give me the equations of two lines that have the same slope but are not parallel.

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.