Aflower shop has 11 red roses, 7 pink roses, 9 white roses, and 3 yellow roses in stock. one type of rose is randomly selected for a flower arrangement. what is the probability that the selected rose is red or yellow?

answer:

i think the answer is 32.5 percent

180

step-by-step explanation:

12-2=10

20-2=18

18x10=180

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