The incomplete table and histogram give information about the waiting time, in minutes, experienced by patients at a dental surgery.
Time (t minutes)
Frequency
0 30 35
40 t<60
60 20
80 t < 100
10
a) Use the histogram to complete
the table.
b) Use the table to complete
the histogram.
0
20
40
60
Time (t minutes)
80
100
Question Feedback

40 minutes

step-by-step explanation:

add the time and multiply by 2

$9.89

step-by-step explanation:

9.90 = p x .06 x .25 (3/12 changed to a decimal)

9.90 = p x 0.015

9.90 - 0.015 = p

9.89 = p

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