The total of your dinner bill plus tip is $19.00. You left a $3.00.

(a) The $3.00 tip is what percent of the dinner bill?

(b) The percent in part (a) is you customary tip percentage. Write an expression for the total of a dinner bill plus tip, for any d dinner bill.

A. Roughly 16%

B. D=x+T

Step-by-step explanation:

A. You want to leave a 16% tip on a meal that cost $19.

First, convert the 16% to an actual number that can be used in a calculation. For percents, this is always done by simply dividing the percent (in this case 16%) by 100%. So, the conversational term "16%" becomes 16% / 100% = 0.16 in terms of a real mathematical number.

Second, you need to find out what 16% of your $19 meal cost is. This is always done by multiplying 0.16 by $19.00, or

0.16 x $19.00=$3.04.

So, the amount of tip you are going to leave is $3.04.

B. D=dinner bill. X = meal price, T=tip.

X+T=D or, D=X+T.