Order of operations.
Parentheses: there are none
Exponents: also none
Multiplication: also none
Division: yep. 45 / 3 = 15
Addition: none
Subtraction: Yes
The absolute value of -5 is 5. (Absolute values are always positive or 0)
5-15= -10
Three would fit cause 3 times 12 is 36 and 4 times 12 is 48 which would be too big
The answer is 2
8(1)(1/4) =
2
Assume the original mass,
a=100, then we know
p(t)=0.6*100=60,
h=100,
Substitute into equation and solve for t.
60=100*(1/2)^(t/100)
divide by 100
0.6=(1/2)^(t/100)
take log on both sides
log(0.6)=(t/100)log(1/2)
divide each side by log(1/2)
t/100=log(0.6)/log(0.5)
t=100log(0.6)/log(0.5)
=100(-0.5108)/(-0.6931)
=73.70 days, approximately
If you google this it may bring up answers for the whole assignment