Atriangle has sides of length 10, 8, and y inches. which is an expression for the perimeter of the triangle and what is the perimeter when y=7? a) 8(10+y) the perimeter is 136 inches when y=7. b) 10(y+8) the perimeter is 150 inches when y=7. c) y(10+8) the perimeter is 126 inches when y=7. (or) d) y+10+8 the perimeter is 25 inches when y=7.

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.