Answer:
$190.80 gratuity tip.
Step-by-step explanation:
Adding up the initial cost and tax, it adds up to $1,272. Subtracting 85% from the total is $190.80.
Answer:
sensitivity analysis
Step-by-step explanation:
The ability to examine the variability of a solution due to changes in the formulation of a problem is an important part of the analysis of the results. This type of analysis is called Sensitivity analysis.
It helps us figure out the robustness of a system or model in the presence of an uncertainty
It also increases the relationship between the inputs and outputs from the system or model
(12 - 9) / 12 = (40 - x) / 40
3/12 = (40 - x) / 40
40(1/4) = 40 - x
10 = 40 - x
10 - 40 = -x
-30 = -x
30 = x <=== percent decrease from 40 to 30