Chi needs some school supplies for 3 classes. he has tokens to use in the machine at school. he bought notebook paper for 60 tokens, a pen for 15 tokens, and 2 pencils. if the pen is 3 times the price of 1 pencil, how many tokens do 2 pencils costs?

To which set of numbers does the number –5 belong? select all that apply. integers natural numbers rational numbers real numbers whole numbers

Mexico city, mexico, is the world's second largest metropolis and is also one of its fastest-growing cities with a projected growth rate of 3.2% per year. its population in 1991 was 20,899,000 people. use the formula p = 20.899e0.032t to predict its population p in millions with t equal to the number of years after 1991. what is the predicted population to the nearest thousand of mexico city for the year 2010?

14. (05.02 lc) what is the value of y in the solution to the following system of equations? (5 points) 2x + y = −4 5x + 3y = −6