The first option,
both have to be negative, because they were originally both part of the one fraction, which was all negative.
The interest would be $123.5
Answer:

Step-by-step explanation:
Given
The attached triangle
Required
Find y
The attached triangle is isosceles; so:

Also, we have:
--- angles in a triangle
Substitute: 

Collect like terms


Answer:
should have 3.5 for the first one ::))
Step-by-step explanation: