The above expression is not in its simplest form, and we need to simplify it, that is what asked in the question.
Given equation,
First of all, let's open the parentheses to combine the like terms for simplifying.
Arranging the like terms, x² with x², x with x and constant terms near to each other.
Simplying further,
So, the correct option is C
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Send a better picture so I can help.
Complete question :
The average amount that a college student spends on a textbook is $205 with a
standard deviation of $35. What is the probability that a student spends:
A. between $10 and $310?
Answer:
0.999
Step-by-step explanation:
Mean, m = 205 ; Standard deviation, s = 35
Z = (x - m) / s
x = 310
Z = (310 - 205) / 35 = 3
P(z < 3) = 0.99865
x = 10
Z = (10 - 205) / 35 = - 5.57
P(Z < - 5.5)
P(z < 3) - P(z < - 5.5)
0.99865 - 0
= 0.999
First you would turn it into long division then you would just divide from there it is pretty easy
