Determine whether quantities vary directly or inversely and find the constant of variation. it takes three identical water pumps 8 hours to fill a pool. how long would it take four of these same pumps to fill the pool, assuming they all pump at the same rate?

Divide. write in the simplest form. 4 1/6 divided by 10

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)

Which of the following is the result of expanding the series