Leah earned a score of 60 on Exam A that had a mean of 100 and a standard deviation of 20. She is about to take Exam B that has a mean of 43 and a standard
deviation of 5. How well must Leah score on Exam B in order to do equivalently well
as she did on Exam A? Assume that scores on each exam are normally distributed.

$119.20

step-by-step explanation:

$372.50 - 60% off is $149. $149-20% off is $119.20

step-by-step explanation:

we have

using a graphing tool

see the attached figure

this is a quadratic equation (vertical parabola) open up

the vertex is a > vertex

the domain of the function is all real > interval (-∞,∞)

the range of the function is the > [-6.125,∞)

the function has two x->   and

the function is increasing over the > (0.25,∞)

the function is decreasing over the > (-∞,0.25)

yeah i know the problem you need. i am taking it right now. the answer is step 3

~mickey

ιт ωιℓℓ вєтнє fιяѕт ¢нσι¢є(α.)

convert the exponential equation to a logarithmic equation using the logarithm base (6) of the right side (36) equals the exponent (2).

ℓσg6(36)=2

нσρє ι ¢συℓ∂ нєℓρ уα