Part A:
Given in the statement
r(t)= 2t
A(r) = πr2
So to find A[r(t)]
You have to plug r(t) into A(r)
Answer: A[r(t)] =π(2t)2=4πt
Part B:
The statement tells you t=5 min and
π=3.14
So plug in you values
A[r(t)]=π(2(5))2=4* 3.14*5=62.8
Answer:
63
Step-by-step explanation:
The formula for volume of a box is length×width×height = volume
So you would multiply 3.5×6×3=63
and surely you'd know what the roots are
Answer:
Step-by-step explanation:
The answer is:
s= -1 and t = - 1
I'm not sure about the answer, but this is how I would do it, since 15% and $150 are the same based on the question. do let me know if it's right! :)
