<span>The answer would be (f(x) = (x – 8)2 – 56)</span>
Answer:
She must attend 6 or more classes in order to be in the recital
Step-by-step explanation:
must attend > .15(40)
must attend > 6
Answer: last option (5π√146 units²)
Step-by-step explanation:
To solve the exercise you must apply the formula for calculate the lateral area of a cone, which is shown below:

where r is the radius but L is the slant height.
As you can see in the figure attached:

But you need to find the slant height with the Pythagorean Theorem (L would be the hypotenuse):

Substitute into the formula, then:
units²
1,800 and 60 I would believe since we're rounding
Obviously it will be 0.25.
Because this number is a rational number not a integer number....