A laptop computer is purchased for $2450. After each year, the resale value decreases by 30%. What will the resale value be after 3 years? Use the calculator provided and found your answer to the nearest dollar.

$840

Step-by-step explanation:

This is an example of a compound percentage change.

To work this out you should multiply $2450 by 0.70 to the power of 3.

You would multiply by 0.70 as you are decreasing the amount by 30%. And so by multiplying the amount by 0.70 you are decreasing it by 30% and by doing it to the power of 3 you are decreasing it 3 times.

d

step-by-step explanation:

hello and welcome!

so, when we see the words "proportional" along with a table, we need to know that we're looking numbers that divide by the same thing.

looking at this table, we simply have to do a trial and error, and divide to see which numbers have the same quotient. if you look at choice a & c, they both have equal quotients for three of the numbers, with one exception, so those can't be the answer. looking at b, there is no similarity, so that can't be it. then, we see d; if you divide all the numbers in the table, you'll see that they all divide by two, which is a proportional relationship, and our answer!

also, always remember that the x will always be the number that goes into y, and somewhere behind this table, is a formula. for this specific table, the formula would be:

since our x-value is being divided by two to get the y-value. and if they were to ask for more numbers in the series, this is the formula you would use to find them.

-362

step-by-step explanation:

(12)(4)+2(12)-34(12)+2(12)-3

  \/         \/         \/         \/

  48 +   24 -   408 + 24 - 3

      \   /               \   /

          72     -     432 - 3 = -363