# algebra

posted by
**ann** on
.

Please check for me and tell me how to correct, thank you.

Mary wants to put a walk( 10 ft wide)all the way around her house. house Length=60 ft width 45 ft

A. write a polynomial that represents the total area of the house and walk

total area of walk and house =

(2x+60)(2x+45

= 4x^2 + 90x + 120X + 2700

= 4x^2 + 210x + 2700

b. Find the combined area of house/walk.

X= 10 width of walk

Area = 4(10)^2 + 210(10) + 2700

= 4(100) + 2100 + 2700

=400 + 2100 + 2700

= 5200 sq ft