Answer:
2
Step-by-step explanation:
$488
16×20=320
8%×2100
0.08×2100
168
320+168=$ 488
Edit:
a is 18
b is 36
c is 18
d is 18 times sqr root of 3
D
1. x = 0
2. x= 0
3. x = 10
4. x = -4
5. x = 0
6. x = -1