Answer:
B. 
Step-by-step explanation:
You can use proportions in all of these as I explained in another one of your questions. I'll post the answers if you still want them.
Answer:
(5, - 4)
Step-by-step explanation:
Given a quadratic in standard form : ax² + bx + c : a ≠ 0
Then the x- coordinate of the vertex is
= - 
x² - 10x + 21 ← is in standard form
with a = 1, b = - 10, so
= - 
= 5
Substitute x = 5 into the quadratic for the corresponding value of y
y = 5² - 10(5) + 21 = 25 - 50 + 21 = - 4
vertex = (5, - 4)
The amount Keiko pays annually is $329.8
To answer the question, we need to know the amount Keiko pays annually
<h3>How to calculate how much Keiko pays annually.</h3>
Since Keiko health insurance premium annually is $3298 and if his employer pays 90% of the premium, we want to know how much Keiko pays.
Since the employer pays 90% of the premium, the employer pays x = 90% of $3298
= 0.9 × 3298
= $2968.2
So, the amount Keiko pays annually is y = premium - amount employer pays, x
= $3298 - $2968.2
= $329.8
So, the amount Keiko pays annually is $329.8
Learn more about insurance premium here:
brainly.com/question/25280754
#SPJ12
Answer:
If your solving for x then its x=3 because you combine liked terms then divide both sides by 3.
