I need step by step to simplifying - 7.9+8.2-3.4+2.1

A pool has 2 pipes, one to fill and one to empty it. Ms. Charles wants to fill the pool, but she mistakenly turns on both pipes at the same time. The pipe that fills the pool can fill in 6 hours and the one that drains it can do that job in 10 hours.

Jeremy brought a souvenir while on vacation. The item cost $22, but the total bill was $23.43. What percent was the sales tax?

How do I find a polynomial function of degree three and has the zeros 2, - 1, and 3?

A recipe requires 2/3 cup of butter, Rama wants to make 3/4 of the recipe, how many cups of butter should Rama use?

3 Polnis - Trevor has a $1000 bond with a 4.5% coupon. Trevor purchased this bond for $965. What is the yield of this new bond? O A. 5% OB. 5.1% C. 4.5% D. 4.7%

How many 3 inch cubes will fit in 8 ft container

The price of a vase was increased by 4% to £22. What was the price before the increase? Give your answer to the nearest penny.

Sarah had to limit her fat intake to 25% of total calories if the fat intake is 550 calories what is the total number of calories she consumed for the day

Two cars start at the same time, but travel in opposite directions. One car's average speed is 80 miles per hour (mph). At the end of 4 hours, the two cars are 520 miles apart. Find the average speed in mph of the other car. (Enter an exact number.

Bao can eat 12 chicken wings in 3 minutes. She eats the chicken wings at a constant rate.