Answer:
6 Hours
Step-by-step explanation:
If the rate is -3, that means there is an hourly change of 3 degrees. To get to 18, you must divide 18 by 3.
18÷3=6
3. 5/8 and 30/48 because 5 can go into 30 and 8 can go into 48
I(interest)=P(princple)R(rate)T(time)
I=420*.07*1=$29.4
A is correct.
Peace.