Answer:
300%
Step-by-step explanation:
Given

Required
Find the percentage change in y when x decreased by 50%
First, convert to equation

Where k is the constant of proportionality
When x decreased by 50%



Expand

Substitute
for y



The percentage change is then calculated as:





<em>The percentage in y is 300%</em>
The answer would be 79 because the dog punched the alpaca
4 raised to power 1 = 4¹ = 4
4 raised to power 2 = 4² = 16
4 raised to power 3 = 4³ = 64
4 raised to power 4 = 4⁴ = 256
4 raised to power 2 = 4⁵ = 1024. This is outside the range, so it is excluded.
All the powers are 4, 16, 64 and 256
Answer:
a)
, b)
or
, c)
or 
Step-by-step explanation:
a) The function is solved by factorization:

b) The function has the following form:


The roots of the polynomial are found by factorization:

or 
c) The function has the following form:


The roots of the polynomial are determined by the General Formula for the Second-Order Polynomial:



