Answer:
3645
Step-by-step explanation:
13,500*0.09=1215
1215*3=3645
Sorry a bit messy, with a ratio of 2:5:1, that means 5 would be the longest and your longest piece is 125, diving 125 by 5 gets you 25 cm, this is also your shortest piece since 1x25=25
<span>x^2 - 12x - 45
= (x - 15) (x + 3) .........</span><span>factored form</span>
85+88+87+80+x all divided by 5= 82
340+x=410
410-340=70
Your answer is b. hope this helps!