Answer:
84 in²
Step-by-step explanation:
12+9=21
21x0.5=10.5
10.5x8=84
1 to 1
function f in more than one point, then the function is 1 to 1
8.822. Hope this helps.
c i suppose the answer
1/5, 1/6, 1/7, 1/8,1/9, 1/10,1/11,1/12
