Question

Questions in comment

Answer 1

13. Radio signals travel at a rate 3 × 108 of meters per second. How many seconds would it take for a radio signal to travel from a satellite to the surface of the Earth if the satellite is orbiting at a height of 3.6 × 107 meters?
8.3 seconds
1.2 × 10–1 seconds (my answer)
1.08 × 1016 seconds
10.8 × 1015 seconds

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17. Does the rule y = –3x5 represent an exponential function?
yes (my answer)



For questions 23–24, find the balance in the account.

23. $3,300 principal earning 4%, compounded annually, after 3 years
$3,712.05
$211,200.00
$3,696.00
$10,296.00


24. $1,600 principal earning 7%, compounded semi-annually, after 33 years
$4,979.11
$14,920.54
$112,992.00
$15,494.70


25. A tractor costs $15,450 and depreciates in value by 14% per year. How much will the tractor be worth after 3 years?
$22,889.85
$15,408.00
$8,451.28
$9,827.07

Answer 2

I like tractors.
1st yr depreciation is $2163 depreciated value now is: $13,287
2nd yr depreciation is $1860.18 value is now $11,426.82
3rd yr depreciation is $744.07 value is now $10,682.75
Answer is $10,682.75

Answer 3

That was 25.