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Olegator [25]
3 years ago
11

Can you help me solve these two practice problems? If so, can you show me how you got the answers because I'm lost. Thanks!

Mathematics
1 answer:
densk [106]3 years ago
4 0
(-11,-19) all you have to do is make one variable like x the same in both equations and so they cancel out, then you can solve for y...and to get x, once you have the final answer for y...plug that into the equation and then solve x.
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Suppose a new car is worth $30,000. You can use the function y=30,000(0.85)^x to estimate the car’s value after x years. What is
ANEK [815]
The decay factor here is 0.85, and it means the car’s value changes by 85% every year, or goes down by 15% every year.



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y is the final amount.

a is the initial amount, which is $30,000 in this case.

(1 - b) is the decay factor, or the number the original value gets multiplied by each year, which is 0.85 here.

b is the percent decrease in decimal form. In this case, we can find it using the formula (1 - b) = 0.85. We soon find that b = 0.15, or 15%.

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3 0
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Andre45 [30]
If you would like to know how much does a 93-pound person weigh on the Moon, you can calculate this using the following steps:

120 pounds on the Earth ... 20 pounds on the Moon
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Answer:

1.9 years

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Hope this helps!

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3 years ago
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