Teresa drove 240 miles using 9 gallons of gas. at this rate, how many gallons of gas would she need to drive 216 miles?

Factor the monomial completely 42a3b3

Can someone me and do the problem plz so i can understand it more better

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36