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Effectus [21]
2 years ago
14

If the sales tax in a town is 5% and Amanda pays $10 in tax on her purchase what was the cost of the item?

Mathematics
1 answer:
Vikentia [17]2 years ago
5 0

Answer:

$200

Step-by-step explanation:

If the tax is 5%, then she pays $5 for every $100. If she paid $10 in tax, her purchase was $200.

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Fidel has a rare coin worth \$550$550dollar sign, 550. Each decade, the coin's value increases by 10\%10%10, percent.
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Answer:

Option B - 550(1+0.1)^6

Step-by-step explanation:

Given : Fidel has a rare coin worth $550. Each decade, the coin's value increases by 10%.

To find : Which expression gives the coin's value, 6 decades from now?

Solution :

The given situation represents the exponential function,

y=a(1+r)^n

where, a is the initial value i.e. a=$550

r is the increased rate r=10%

n is the time i.e. n=6

Substitute the value in the formula,

y=550(1+10\%)^6

y=550(1+0.1)^6

Therefore, option B is correct.

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