Answer:
C(t)= D-(30Dt/100)
Step-by-step explanation:
C(t)= 120-(30*120*1h)/100 C(t)=84
C(t)= 120-(30*120*2h)/100 C(t)=48
C(t)= 120-(30*120*3h)/100 C(t)=12
Answer:
20
Step-by-step explanation:
you first multiply 7 and three
then add that to four
then subtract 5




Taking
as common from first two terms and 6 from last two terms, we have

Taking the factor
as common,


0.333
It's just 1 divided by 3 on a calculator to three decimal places.