The miller family goes out for dinner, and the price of the meal is $60.the sales tax on the meal is 7% and they also want to leave a 18% tip. what is the total cost of the meal?

$75.76

Step-by-step explanation:

To start off, we need to increase the $60 dinner cost by 7% to get our total cost after tax. This is done by converting 7% into a decimal...

7% ---> 0.07

Our next step is to multiply 60 by 0.07 which would get us...

(60) x (0.07) = 4.2

Now we add 4.2 to 60 which gives us $64.20. Now that we have our total after tax, we can add an additional 18% of our current cost to our new cost. This is done by using the same method used above.

1) 18% ---> 0.18

2) (64.20) x (0.18) = 11.56

3) 64.20 + 11.56 = 75.76

The total cost of the meal is $75.76

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step-by-step explanation:

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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