||The forest ranger told Mr. Trenton's class that clean rain has a pH of 5.6. He said that a change of one unit in pH (for example, from 6.0 to 5.0) means the substance is 10 times more acidic. How much more acidic is rain with a pH of 5.3 than rain with a pH of 5.6? (Note: As the pH goes down, the acidity increases.)
||The 6th grade students at Edhelper Elementary School are going to the zoo on Earth Day. They will complete a series of projects about endangered animals. There are one hundred thirty students in 6th grade. There are seven teachers and three bus drivers also going to the zoo. Using the chart below, find the total cost for the trip.
|Students|| ||$4.00 each|
|Teachers|| ||$13.00 each|
|Bus Drivers|| ||Free|
|State Sales Tax|| ||7 %|