5-2(9) +9²÷3 please help me ​

5 - 2 x 9 + 9^2 divided by 3

5 - 2 x 9 + 81 divided by 3

5 - 18 + 81 divided by 3

5 - 18 + 27

-13  + 27

14

1) c 2143.6 cm

2) c 113.0 m

3) a 33.5 ft

4)   d 2 cm

5) c 20 mm

6) 180 in

7) d 120 ft

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk