Answer:
a^2+3a+2
Step-by-step explanation:
(a+1)(a+2)
a(a+2)+1(a+2)
a^2+2a+a+2
(7,2)45 units sqrd
45 units sqrd because its a 5x9
31. A
32.A
33.B
34.C
7 hours and 30 mins.
