A diver starts out at 250 feet below the surface. She then swims upward 145 feet. Use a signed number to represent the diver's current depth.

All per-unit concepts rely on ratios, meaning, to provide a type of measurement

Whats the name of the vertical axis

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.