Answer:
The rate of change of the volume of the cylinder at that instant = 
Step-by-step explanation:
Given:
Rate of increase of base of radius of base of cylinder = 7 mm/hr
Height of cylinder = 1.5 mm
Radius at a certain instant = 12 mm
To find rate of change of volume of cylinder at that instant.
Solution:
Let
represent radius of base of cylinder at any instant.
Rate of increase of base of radius of base of cylinder can be given as:

Volume of cylinder is given by:

Finding derivative of the Volume with respect to time.

Plugging in the values given:


Using 

(Answer)
Thus rate of change of the volume of the cylinder at that instant = 
If the correlation is correct, then 1 pen would be equal to $2. In this case, karen spent $2 for each pen for a total of 3 pens for $6. If Leo bought 1 pen, he would spend $2. So, $6-$2=$4. Karen spent 4 more dollars than Leo. If this helped, please mark me brainliest, thank you and if you need more help, feel free to message me!
Answer:
12-10=2 / (6×5)=30 / 5×2=10 / 12×2=24 / 6+5-2=9
Answer:
126.5
Step-by-step explanation:
Given :The monthly rent for each unit is $925
To Find : What is the GRM for a residential duplex with a selling price of $234,000 if the monthly rent for each unit is $925?
Solution:
Annual Gross Rents = $925
Property Value = $234,000
For answer to be 126.5 , $925 must be semiannual rent
So, annual rent = 925*2
Formula : Property Value = Annual Gross Rents X Gross Rent Multiplier (GRM)
Substitute the values :



Hence The GRM for a residential duplex with a selling price of $234,000 if the monthly rent for each unit is $925 is 126.5
So, Option D is true .