An identification system assigns each item a code using 3 capital letters. How many different codes are possible? (there are 26 letters in the alphabet)

A. 78

B. 7,800

C. 15,600

D. 17,576

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.

The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?