The product of 3 and a number is the same as 24 less thrice that same number

What is the slope of the line that contains the points (4,8) and (9,8)? what type of line is it?

I'll give brainliest if you answer right : )

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.