The figure below shows how the price of Amazon's Kindle 2 e-book reader has decreased over time. The data for 2011 are projected.) For example, the price was $349 when the Kindle was launched in February 2009
The price had dropped to $299 by July 2009. The graph is a straight line, and we will assume that the relationship is linear
$400
350
300
250
200
150
100
1.60
150
8
/monthRound to
a) By using the information for February and July of 2009, the decrease in price over each month is s
the nearest dollar)
b) Select the formula for the price, in dollars, as a linear function of the time in months since February 2009. The answer is letter
a. Price = $578 - $10(t)
b. Price = $350 - $8(t).
c. Price = $349 - $10(1)
c) Find a formula for the price in dollars, as a linear function of the time in months since February 2009. Using this formula, the price in January 2012 which is
35 months after the Kindle was launched will be s
(Round to the nearest dollar)
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step-by-step explanation:

12: 00 p.m. to 7: 00 p.m. is a total of 7 hours.

4: 00 p.m. to 7: 00 p.m. is a total of 3 hours.

this means that from 4: 00 p.m to 7: 00 p.m. this represents 3/7 of what was lost from 12: 00 p.m. to 7: 00 p.m.

after knowing this, after doing 11,600 - 6,800 = 4,800

4,800 represents 3/7 of what was lost for 7 hours.

we then divide 4,800 by 3 which gets 1,600.

because we know that 1,600 represents 1/7 of how much water was lost, we just have to multiply by 7, which gets 11,200.   after adding 11,200 to how much water was left at 7: 00 p.m. which was 6,800. 11,200 + 6,800 = 18,000

this means that the pool originally had 18,000 gallons in the pool.

you can also check your work by doing 18,000 - 4(1600), which becomes           1800 - 6400 which gets you 11,600.

the answer for this question is : 360°

step-by-step explanation:

we have been given a triangle   we need to tell which one of these is a triangle below to map onto itself.

360° rotation is the complete rotation which eventually leads to the same figure which is given.

the correct will be, that is 360° that will cause the triangle below to map onto itself.