The width of a 2-by-4 piece of wood is acutally 3 1/2 inches. Find the total width of 32 2-by-4s laid side-by-side, Simplify your answer.

If a baby uses 15 diapers in 2 days, how many diapers will the baby use in a year?

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.

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.