The number of members in a gym club increased by 40% the first year and then decreased by 6% the second year. Find the relative change over the 2-year period. (Keep 1 decimal place in your final answer, and please write it as a percentage. Use a positive or negative sign to indicate increase or decrease, respectively.)

Estimation is useful for tipping when you’re dining out, too. If the service is good, 20% of the overall bill is a nice tip to leave. Here’s a clever way to find that: move the decimal of the total amount one place to the left: that gives you 10%. Round this value to the nearest dollar and double the amount, and voila! Twenty percent. Use this to find a reasonable tip for good service on each bill. a. $31.45 b. $129.80

Suppose a 12- ounce coffee at starbucks cost 1.46 in 2005. in 2010 that same cup of coffee cost 1.94. what was the relative increase in the price of the cup of coffee from 2005 to 2010? Round to the nearest one percent.

Ten percent of students at ACM are nursing students. Forty percent of students at ACM are sophomores. Five percent of ACM sophomores are nursing students. Assume that ACM only has freshman and sophomore students. What percent of ACM nursing students are freshman? Type your answer as a decimal rounded to the nearest hundredth (two decimal places).