Mr. shaffer has approximately 130 different students throughout the day. this is about 20% of the total number of students in the school. find the approximate number of students in the school.

The approximate number of  total students in the school is 650.

Step-by-step explanation:

Here, given the number of students with Mr. Shaffer has = 130 students

Let us assume the total number of students in the school  = m

Now, given: 20 % of total students in the school = 130

⇒ 20 % of m  = 130

or, m =  650

Hence the approximate  total number of students in the school is 650.

step-by-step explanation:

a.   since the profit made in 2012 is equal to the profit made in 2014, the profit is           symmetric about the line y = 120,000.

step-by-step explanation:

given that megan owns a clothing boutique.

the profits of 2010, 11, are recorded and shown as follows:

years since     2010 0     1     2     3       4       5

profits made in 1000's   39       84     111     120   111     84

we find that profit gradually increases form 2010 to 2013 upto 120,   then starts decreasing.

the profits for 2012 and 2014 are the same while that of 2011 and 2015 are also the same.

this shows that there is symmetry about the line profit = 120000

hence answer is:

a.   since the profit made in 2012 is equal to the profit made in 2014, the profit is           symmetric about the line y = 120,000.

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