Acity that had 40,000 trees started losing them at a rate of 10 percent per year because of urbanization.
in approximately years, the number of trees in the city reduced to a quarter of the original amount. hint: model the situation as p = p0(1 − r)t.

Agroup of students want to create a garden. they do not know the exact measurements but they propose using a variable to represent the length and width of the garden. the length of the garden is 10 feet longer than double the width. use a single variable to write algebraic expressions for both the length and width of the garden. write an algebraic expression for the area of the garden. use mathematical terms to describe this expression.

Human body temperatures have a mean of 98.20° f and a standard deviation of 0.62°. sally's temperature can be described by z = 1.4. what is her temperature? round your answer to the nearest hundredth. 99.07°f 97.33°f 99.60°f 100.45°f

What is the ratio of the length of an object in yards to the length of the same object in miles?