Answer:
80 questions
Step-by-step explanation:
100%/20%=5%
5×16=80
Therefore, there are 80 questions in the test.
If you would like to know the value of 'c' in the quadratic equation, you can find this using the following steps:
3x^2 + 5x + 7 = 0
ax^2 + bx + c = 0<span>
a = 3
b = 5
c = 7
The correct result would be 7.</span>
If the school has 3000 students, there are
.. (3000 -30)/27 = 110
homerooms with 27 students.
Then there were 3*110 +4 = 334 participants in the survey.
<h3>Amount earned after 5 years is $ 9030.5561</h3>
<em><u>Solution:</u></em>
<em><u>The formula for compound interest, including principal sum, is:</u></em>

A = the future value of the investment including interest
P = the principal investment amount
r = the annual interest rate in decimal
n = the number of times that interest is compounded per unit t
t = the time the money is invested
From given,
p = 5000
t = 5 years

<em><u>n = 4 ( since interest is compounded quarterly )</u></em>
<em><u>Substituting the values we get,</u></em>

Thus amount earned after 5 years is $ 9030.5561
Carlos : 23.5
Mariana : 20.5
Verónica : 17.5
Luis : 14.5
I THINK !!!
I DONT KNOW IF IM RIGHT!!!!!