A farmer needs to calculate the number of liters in 90 cubic meters of fertilizer. How many liters are equivalent to 90 cubic meters?

Carlos spent 1 1/4 hours doing his math homework he spent 1/4 of his time practicing his multiplication facts how many hours to carlos been practicing his multiplication facts

20 solve 2(4 x + 3) < 5 x + 21. a) { x | x < 9} b) { x | x > -5} c) { x | x > -9} d) { x | x < 5}

I’m really confused and need your assist me with this question i’ve never been taught