Ex1. The spinner is spun. Describe the probability of each outcome.
Write certain, likely, equally likely, unlikely, or
impossible.
1. odd number
2. even number
3. number less than 3
4. number greater than 9
5. prime number
6. the number 5, 11, or 13

14

step-by-step explanation:

14 x 3 = 42

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204