Answer:
Answer is A
Step-by-step explanation:
you first take the same like terms
8c+6-3c-2
8c and -3c are like terms 8c-3c=5c
+6 and -2 are like terms 6-2=4
5c+4
13⅛mm²
Area = ½×base×height
7(f-1)=45
7xf=7f
7x-1=-7
add 7 to 45=52
divide 52 by 7
f=7.43 (rounded)
