the gray car can drive 420 miles on 15 gallons of gas and the blue can can drive 510 miles on 17 gallons of gas. what are the unit rates for a gallon of gas for each car? which car has the best unit rate more miles for less gas show your math and explain each step you took to determine your answer.

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

Type the correct answer in each box. spell all words correctly. a sequence of transformations maps ∆abc onto ∆a″b″c″. the type of transformation that maps ∆abc onto ∆a′b′c′ is a . when ∆a′b′c′ is reflected across the line x = -2 to form ∆a″b″c″, vertex of ∆a″b″c″ will have the same coordinates as b′.

What is the product? a-3/15a × 5/a-3