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.

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)