Answer:
The answer is 6
Step-by-step explanation:
6 + 9(4)
6 + 36
42 ÷ 7
= 6
9514 1404 393
Answer:
30.25π square inches
Step-by-step explanation:
You can use the formula for area in terms of circumference:
A = C²/(4π)
A = (11π)²/(4π) = (121/4)π = 30.25π . . . square inches
_____
You may be expected to find the radius first:
C = 2πr ⇒ r = C/(2π) = 11π/(2π) = 5.5 . . . inches
Then use the area formula:
A = πr² = π(5.5 in)² = 30.25π in²
The time that he studies is the independent variable because you can change that time amount , and the test score / points depend on how long he studies.
S = 3H
^ test score = amount of hours x three points
To find the optimized value you need to find where the vertex(tip) of the parabola
use

to find the optimized x value
y= -w^2 +100w + 0

x = 50
answer: 50