I think the answer is x2 + 3x -28 and the x2 is x to the POWER of 2
Answer:
The simples interest rate needed is 12.5%
Step-by-step explanation:
Explanation is in the attachments.
Hope this helps! :)
i thimk this might be the answer to question 3 (iii)
I'm sorry I don't know how to solve the first question