Mary went to the store and bought cheese for $5.39,milk for $2.78,and bread for $3.55.what was mary's total purchase cost rounded to the nearest dollar? explain how you got your answer.

12$

Step-by-step explanation:

to get the total cost you need to add all the purchases together 5.39+2.78+3.55=11.72 since you need to round to the nearest dollar it is 12 because it is above 11.50

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116

need more info

step-by-step explanation:

what do you mean by "representation"? graph? table? etc.