Step-by-step explanation:
Difference per month = 28
=> January = February - 28 = 66-28 = 38
f(x)=x^2+12x+26
Vertex form of f(x) = a(x-h)^2 +k
We change f(x) into vertex form using completing the square method

We take half of square of middle term
middle term is 12
Half of square of 12 is
then 6^2 = 36
Add and subtract 36 to complete the square


The vertex form 
Answer:
You would expect the outcome to be void 240 times
Step-by-step explanation:
1000 x 0.24
Answer:
a) 1/10 x 5/10 = 1/20
b) 1/10 x 5/9 = 1/18
Step-by-step explanation: