Mrs. Sparks is a 9th-grade Algebra 1 teacher. She teaches three Algebra 1 courses and all the classes recently took a chapter exam.
Below are the scores.

Class 1: 45, 68, 77, 90, 90, 95, 100, 100, 86, 90, 50, 55
Class 2: 64, 65, 70, 40, 100, 87, 84, 88, 90, 90, 95, 80
Class 3: 70, 75, 75, 90, 100, 80, 55, 65, 76, 80, 88, 99

a. Find the mean, median, mode, and range of Class 1.
b. Find the mean, median, mode, and range of Class 2.
c. Find the mean, median, mode, and range of Class 3
f. Find the standard deviation of Class 1.
e. Find the standard deviation of Class 2.
f. Find the standard deviation of Class 3.
g. Which class had a higher standard deviation and what does that mean?

32/80  

91/140

the last one 54 doesn't go into 45. 54/100 ?

step-by-step explanation:

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°

step-by-step explanation:

let's assume

number of candles set =x

price of of x candles =p(x)

we are given

a candle maker prices one set of scented candles at $10 and sells an average of 200 sets each week

so, we get point as (200,10)

he finds that when he reduces the price by $1, he then sells 50 more candle sets each week

so, we can find slope

now, we can use point slope form of line

now, we can plug values

we can use point

and find b

now, we can plug it back

and we get

now, we can find revenue

we know that

revenue = price*quantity

so, we get