Star at -20 and go back by -5 on the number line
Answer:
C.
and
Step-by-step explanation:
You have the quadratic function
to find the solutions for this equation we are going to use Bhaskara's Formula.
For the quadratic functions
with
the Bhaskara's Formula is:


It usually has two solutions.
Then we have
where a=2, b=-1 and c=1. Applying the formula:

Observation: 

And,

Then the correct answer is option C.
and
Answer:
53
Step-by-step explanation:
2*19 =38
then by substituting 2x=38
then,
38+15=53