Answer:

Step-by-step explanation:
According to the problem, the initial condition is $200. If he owed $100 after 4 weeks, that means he paid $25 per week, so that would be the constant ratio. Therefore, the expression would be:

Where
represents the amount owed, and
represents weeks.
So, in the 4 week, that is,
he owed:

As you can observe, the relation we found first perfectly to the problem. So, the final expression that model this problem is

This is pretty much what it is- when you do it try to get your lines straighter
The area of a rhombus can be computed from its side (s) and angle (θ) by
.. A = s^2*sin(θ)
For your numbers, this is
.. A = (12 cm)^2*sin(60°) ≈ 124.7 cm^2
Independent Events are 2 events where the occurrence of the first doesn't affect the occurrence of the second and vice versa.
Example: rolling 2 simultaneously dies, the occurrence of the first, has no impact, no effect on the occurrence of the 2nd roll
I think the original price is either $51 or $69