Answer:
see explanation
Step-by-step explanation:
If ∠ D ≡ ∠ CED then CD ≡ CE
The base angles theorem states that if the sides of a triangle are congruent, that is isosceles triangle the the angles opposite these sides, the base angles, are equal.
Here we are using the converse of base angle theorem (b)
That is if 2 angles are congruent ( base angles ) then the sides opposite these angles are congruent.
Solution :
= k.n (cost proportional to quantity)
35000 = k . 700
k = 
= 50
So
= 50 n
Now
(cost proportional to square of n)

3430 = 490000 P



Now,
(fixed)
Therefore,
Total, 


From 14-21 you have to do it by a calculator and then put it between perfect numbers then minus the bigger perfect number by it and if needed graph on a number line
Yes but I don't know how to explain i wish i could help more sorry