Question help A friend plans to use 80 feet fencing to surround three sides of a rectangular vegetable garden. The fourth side of the vegetable garden is bordered by a wall.
a. Write a function that models the area A of the vegetable garden in square feet when the length of the fence parallel to the wall is x feet
b. For what lengths x is the area of the vegetable garden greater than 350 square feet?
c. For what lengths x is the area of the vegetable garden greater than 750 square feet?
d. Is it possible for the fence to enclose an area greater than 900 square feet? Explain.

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

3< x< 5

step-by-step explanation:

|x - 4| < 1

there are two solutions, one positive and one negative.   remember to flip the inequality when taking the negative solution

x-4 < 1       x-4 > -1

add 4 to each side

x-4+4 < 1+4       x-4+4 > -1+4

x< 5                 x> 3

3< x< 5

by definition, an arc subtended by a central angle of some given measure has the same measure. so .