Answer:
approximately 42.05
Step-by-step explanation:
We know that the distance formula is
, so if we use (3,8) as point 2 and (21, -30) as point 1 (note that these are interchangeable), we know that
x₂=3
y₂=8
x₁=21
y₁=-30
Then, we can plug it into the formula to get 
Answer:
B
Step-by-step explanation:
The association is positive linear so that means everything is increasing as the line goes up.
Answer:
B. The domain of the graph is all real numbers less than or equal to 0
Step-by-step explanation:
First, let's find the domain.
(negative infinity, 0} or All real numbers less than or equal to 0
Second, range.
[0, positive infinity) or All real numbers greater than or equal to 0
Right off the bat we can eliminate A, C, and D. We are left with choice B. as the answer.
Notes:
- The sign of the coefficient of the quadratic equation determines if the vertex is a minimum or maximum. Positive looks like ∪ so has a minimum. Negative looks like ∩ so has a maximum.
- Maximum/minimum height is the y-value of the vertex.
- Time to reach maximum height is the x-value of the vertex (which is also the Axis-Of-Symmetry).
Answer: 4) maximum
5) 20.1 ft
6) 2 seconds
<u>Step-by-step explanation:</u>
4) h(t) = -16t² + 256t
↓
the coefficient is negative so it looks like ∩.
Therefore, it has a maximum.
5) h(t) = -16t² + 30t + 6

6) h(t)=-16t²+64t+80

(1 - y)12 represents the price of the set of tennis balls after a coupon was applied.