Algebra 1A, I need help

for the first question at the top, x=10

Step-by-step explanation:

x+3+9x=8x+23

(subtract 8x from both sides)

x+3+x=23

(combine the x terms)

2x+3=23

(subtract 3 from both sides)

2x=20

(divide by 2 from each side)

x=10

a. the are of the rectangle is 18.25

b. 18.25 times two is 36.50

rae me : d

4x and 6y

im not sure though