The answer is -1/16 or -0.0625, do you need to see work?
Martin offers a better deal because you only have to pay 48 dollars unlike with Danny where you have to pay 105 dollars just for a 3 hr. lesson.
Going by what I was taught in chemistry, there would only be 1.
Completely different...
.15*.15*.15*500
500(.15^3)=1.6875
500(.45)=225
