You go to the electronics store to buy 3 CDs. Each CD’s original cost is $9.99. You have a coupon for 10% off and the sales tax is 6%. What is your total purchase cost?

The answer is: 28.59

Solution:

Total cost before tax and discount:

9.99 x 3 = 29.97

total discount: 

29.97 x 0.10 = 2.997

total cost - discount:

29.97-2.997=26.973

Tax:

26.973 X 0.06 =1.61838

Total cost plus tax:

26.973 + 1.61838 =28.59138 round to only 2 decimals: 28.59

Step-by-step explanation:

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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i think it's ф or x=6,-6

step-by-step explanation:

-x^2=-36

x^2=-36

ф

or

if you mean by : -(x^2)=-36

it'll be: x^2=36

x=6,x=-6

hope it'll ! have a good day!

you for asking!