Lee drove 420 miles and used 15 gallons of gasoline. how many miles did lee's car travel per gallon of gasoline?will give brainlist and worth of lot of points

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Lucy and donavan measured the length of the school garden. lucys measurement is 11.3m and donavans measurement is 113 cm. could both be correct? explain

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212