What expression is equivalent to 4 x 3/10

Abank gives 6.5% interest per year. what is the growth factor b in this situation?

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 measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?