Mrs. rodrigues wants to compare the spread of the test scores of her two biology classes. which statistic should she use? (multiple choice) a.) mean
b.) standard deviation
c.) median
d.) mode

if anybody can help me with this, thank you so much! i'm trying to pass a pre-test on e. d.g. e.n. u.i. t.y :( if you know the answer, please explain instead of just giving me the answer alone. thank you! <3

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

step-by-step explanation:

given expression is .

now we need to simplify the given expression .

we know that square root is equivalent to the power 1/2. so that means we can take half of the exponents to get the square root of given expression.

expanding that will give a very very large number so let's keep answer in exponent form.