Answer:
1.5 - it represents the time in seconds where the ball is highest
Step-by-step explanation:
There are 2 methods of approaching this.
The first method involves graphing, simply place into a graphing calculator and view the vertex. The horizontal line coming down from the vertex is the axis of symmetry (it splits the parabola in half).
The second method is finding the axis of symmetry (vertex) algebraically.
-b/2a is the equation used to find the x term of the vertex, and if we were to substitute our values in, we'd get -48/-32, giving us 1.5
When you graph those points you can see that the slope of the line is 2.5. Since it is consistent it is very much a linear equation. This line also goes through the point (0, 0), which makes sense if you think about it...if you don't buy any cd's (0 cd's) you shouldnt be spending any money, right? The equation then for this relationship, using the fact that the y-intercept is 0, isy = 5/2 x or y = 2.5x. Either one is fine. They're exactly the same.
Answer:
80 pages
Step-by-step explanation:
Point slope Equation is :
y = mx + c
In the above question
y = 310 pages
x = number of days = 10 days
m= 23 pages per day
c = ?? Unknown
c = y - mx
c = 310 - 23 × 10
c = 310 - 230
c = 80 pages
She will still have 80 pages left to read after 10 days
Answer:
D. 14
Step-by-step explanation:
4^2 - 2 (evaluate)
16 - 2 (calculate)
14