Tammy has a rectangular rug with an area of 21 square feet. The rug is 4 feet longer than it is wide. Tammy wrote an equation that could be used to solve the width of the rug. Which of the following represents the equation after converting it to standard form? Question 1 options:

w2+4w+21=0

w2+4w−21=0

4w2+4w−21=0

4w2−21=0

Can someone me and plz do the problem

The linear combination method is applied to a system of equations as shown. 4(.25x + .5y = 3.75) → x + 2y = 15 (4x – 8y = 12) → x – 2y = 3 2x = 18 what is the solution of the system of equations? (1,2) (3,9) (5,5) (9,3)

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%