The original price of a watch was $550. During a mid-year sale, the selling price of the watch was $440. Find the percent discou
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In exponential decay, the value under the exponent must be less than 1 and more than 0
but wait, we have exponents that are negative values, that's interesting
it's a trick, we need to convert it to form
remember that
also that
therefor
so those ones that have the -x exponent, we need to flip the fraction
first one is 7/4, that is more than1
2nd one has a negative exponent so it becomes (3/4)(5/4)^x and 5/4 is greater than 1
3rd one has negative exponent so it becomes (3/2)(7/8)^x and 7/8 is less than 1
4th one is 9/2 and that's more than 1
3rd one is answer or
is an exponential decay function
but wait, we have exponents that are negative values, that's interesting
it's a trick, we need to convert it to form
remember that
also that
therefor
so those ones that have the -x exponent, we need to flip the fraction
first one is 7/4, that is more than1
2nd one has a negative exponent so it becomes (3/4)(5/4)^x and 5/4 is greater than 1
3rd one has negative exponent so it becomes (3/2)(7/8)^x and 7/8 is less than 1
4th one is 9/2 and that's more than 1
3rd one is answer or