It's 2.7 pounds because I set up a proportion of 150 over 90 = 4.5 over X and multiplied 90 * 4.5 divided by 150
Si= PTR/100
18 = (3*300*t)/100
18 = 9t
t = 2
2 years
I’m pretty sure it’s 7, do you want an explanation?
<span> i think its -x+5/6x^2-x-12 but i might be wrong.....</span>