Answer:
$0.83
Step-by-step explanation:
$4 = 48x (x = number of text messages)
$4 ÷ 48 = x (divide by 48 on both sides)
0.83 = x
The formula is 2 pi r
13). 31.4 in
14). 47.1 in
15). 157 in
I and II only
1 Pound is equal to 1.81 Australian Dollars