Which of these is the algebraic expression for "4 less than the product of 3 and some number? " a. 4m − 3 b. 3m − 4 c. 3 − 4m d. 4 − 3m

Can someone pls ! pls answer all. no explanation needed..

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?