Answer:
1. L1 = 
2. O2 = 
Step-by-step explanation:
Given: x = 
1. To make L1 the subject of formula;
x = 
cross multiply to have;
L2 - L1 = xL1(O2 - O1)
collect like terms,
L2 = xL1(O2 - O1) + L1
factorize the right hand side;
L2 = L1[x(O2 - O1)]
L1 = 
2. To make O2 the subject of formula;
x = 
cross multiply to have;
L2 - L1 = xL1(O2 - O1)
open the bracket to have;
L2 - L1 = xL1O2 - xL1O1
⇒ xL1O2 = L2 - L1 + xL1O1
O2 = 
= 
Answer:
Tony
Step-by-step explanation:
Tony:
3 Packs = 12 dollars
1 Pencil Box = 7 dollars
Mario:
4 Binders = 24 dollars
-6.
12+7= 19
24-6=18
Tony spent more money.
divide 2.49 by 5
2.49/5 = 0.498 rounded to nearest hundredth is 0.50 per pound
2.6 and 2.4. they are the decimals next to 2.5