He harringtons go to a restaurant for lunch and their bill is $86.20. after 6.5% tax and tip, they pay a total of $100. if the harringtons were exceptionally with their service, decide if their tip reflected this. explain your reasoning.

Bill for lunch in the Restaurant=$86.20

Tax=6.5%

Total money paid by  Harringtons=86.20+86.20 =86.20+ 5.60

  =91.80 (approx)

Total Bill paid =$100

Amount paid as a tip=$100 - $ 91.80=$8.20

I think that Instead of paying currency in change ,Harringtons decide to give note.But Maths says something else

% of money paid as tip=

                                     9.5% (approx)

Which shows that they were pleased with the service.

the system of inequity is

step-by-step explanation:

from the given graph it is noticed that we have two related lines. one is solid and another is dashed.

if a line passing through two points, then the equation of line is

the solid line passing through the points (0,4) and (4,0).

the related equation of solid line is .

similarly, find the related equation of dashed line. the dashed liune passing through the points (0,0) and (3,1).

the related equation of dashed line is

from the given graph it is noticed that the point (0,1) lies on the shaded region, therefore the point (0,1) must be satisfied by the related equations.

check the related equations by the point (0,1).

this statement is true if the sign of inequality is < instead of equality. since it is an solid line therefore the sign of inequality will be . the required inequality is

similarly, check the second related equation.

it is a dashed line, so this statement is true if the sign of inequality is > . the required inequality is