Answer:
a is 2x+2x and 4x
b is 6(7y-4) and 6*7y-6*4
Answer:
Therefore the rate of growth of the tree is 33 cm/ yr.
Step-by-step explanation:
Given that,
The height of the tree is
H= 210 +33t
Here H represent the height of tree in cm and t is time in year.
The rate of growth is the first order derivative of the H with respect to time.
i.e The rate of growth 
∴H= 210 +33t
Differentiating with respect to t


Therefore the rate of growth of the tree is 33 cm/ yr.
Answer:
Well the options are not copy pasted properly so im just gonna answer the question
Step-by-step explanation:
1 Gallon contains 16 cups,
so 16 cups for 1 day
so for 7 days,
No. of cups = 7 x 16 = 112
so the expression would be,
16 cups x 7 days
Yes because it is the amount you are studying.
Answer:
b
Step-by-step explanation: