A car can travel 329 km on 47 liters of gasoline. How much gasoline will it need to go 161 km?

Write the expression 7x^3-28xy^2 as the product of 3 factors

Solve this riddle: i am an odd number. i an less than 100. the some of my digit is 12. i am a multiple of 15. what number am i?

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.