Someone help me please a) A used book store sells hardcover books for $2.50 and paperbacks for $0.50. Write an expression for the cost of buying hardcover and paperback books.

b) The length of a rectangular garden is four meters more than its width. Write an expression to find the perimeter of the garden.

its 69.420

step-by-step explanation:

english, cause i can’t you

step-by-step explanation:

we have

using a graphing tool

see the attached figure

this is a quadratic equation (vertical parabola) open up

the vertex is a > vertex

the domain of the function is all real > interval (-∞,∞)

the range of the function is the > [-6.125,∞)

the function has two x->   and

the function is increasing over the > (0.25,∞)

the function is decreasing over the > (-∞,0.25)