The third option is the answer
Step-by-step explanation:
I think the answer to your question might be 6
5x^2 - 80 = 0
5x^2 = 80
x^2 = 80/5
x^2 = 16
x = sqrt 16
x = (4,-4) <===
Answer:
249.24
Step-by-step explanation:
Year Interest Total
Interest Balance
0 -- -- £200.00
1 £9.19 £9.19 £209.19
2 £9.61 £18.80 £218.80
3 £10.05 £28.85 £228.85
4 £10.51 £39.36 £239.36
5 £11.00 £50.36 £250.36
-6 so option D is the answer