Which component of a stable ecosystem can not be recycled?

A) oxygen

B) water

C) energy

D) nitrogen

When solve an equation using the difference quotient, do I put the equation into the difference quotient, or the difference quotient into the equation?

What type of number is - 0.12 repeating

Graphing Scatterplots and Trend Lines You just found a positive trend line showing a strong relationship between homework scores and test scores for five students. Explain what this means.

In a certain year the price of gasoline rose by 20% during January, fell by 20% during February, rose by 25% in March, and fell by x% in April. The price of gasoline at the end of April was the same as it had been at the beginning of January.

What is the center and radius of the circle? * (x - 2) ² + (y - 9) ^2 = 4

a 15 wire is tied from the top of a pole to a stake in the ground. if the stake is 5 ft from the base of the pole find the height of the pole

What percentage of U. S. adults oppose resident college tuition for the children of illegal immigrants?

An athletic stadium has a capacity of 1.5 * 10^4 fans. If 9 * 10^3 fans buy advance tickets to an event at the stadium, how many tickets will be available at the box office on the day of the event? Use Standard Notation

a pet store sold 245 cans of cat food last weekend for a total of $90.65. what was the price per can?

Find the product. Use any model or strategy. show your work