Because you have to connect the other two sides , so a diagonal line will be longer than a vertical line
9000mm is equivalent to 900cm
Use quadratic formula
if you had ax^2+bx+c=0, then
x=

a=1
b=?
c=34
subsitute

=5+/-3i

=5+/-3i
make 5+/-3 into fraction over 2,(10+/-6i)/2

=(10+/-6i)/2
multiply both sides by 2

=10+/-6i
we conclude that -b=10
b=-10
ok so equaton is
x^2-10x+34
Answer:

Exponential decay
Step-by-step explanation:
We are given that

y=20 when t=0

Taking integration on both sides then we get

Using formula

Using formula




Substitute y=20 and t=0

Substitute the value of C

When t tends to infinity then

When time increases then the value of function decrease
Hence, the function is exponential decay.