the sales tax on the purchase of a futon is 33.53.if the tax rate is 7%,find the purchase price of the futon.
1 answer:
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Answer:
B.
Step-by-step explanation:
To find the inverse of a function/equation:
- Replace f(x) with y: y=5x+4
- Switch x and y: x=5y+4
- Solve for y: x-4=5y ->
- Write in standard inverse notation:
I hope this helps!!
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Answer:
An we can use the normal standard table and the following difference and we got this result:
Step-by-step explanation:
Assuming this statement to complete the problem "with a standard deviation 5 mpg"
We have the following info given:
represent the mean
represent the deviation
We have a sample size of n = 54 and we want to find this probability:
And for this case since the sample size is large enough >30 we can apply the central limit theorem and then we can use this distribution:
And we can use the z score formula given by:
And replacing we got:
An we can use the normal standard table and the following difference and we got this result: