Answer:
a)
, b)
, c) Third day.
Step-by-step explanation:
a) The equation to represent Layla's fees is:

b) The equation to represent Sam's fees is:

c) Both earn the same amount for dog sitting at the third day.
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 = 
= 
Explanation is in a file
bit.
ly/3a8Nt8n
P(LC / S) = P(S intersect LC) / P(S)
P(S intersect LC) = P(S)*P(LC / S) = 0.19 * 0.158 = 0.03
2 times 108 is 216
3 times 72 is 216
4 times 54 is 216
6 times 36 is 216