As a water quality assurance employee for your local aqua america, inc., branch, you record a drop in water levels from 28 feet to 7 feet at your reservoir. what is the percentage decrease?

Which speed is the fastest (use 1 mile ≈ 1.6 kilometers)? a. 12 miles/hour b. 18 feet/second c. 19 kilometers/hour d. cannot be determined

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.

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)