: Brand A sells a can of tomato sauce that costs $0.47 for 8 ounces of sauce. Brand B sells a can of tomato sauce that costs $2.59 for 15 ounces of sauce. The brand of tomato sauce is the better buy per ounce of sauce.

Step-by-step explanation:

Brand A sells a can of tomato sauce that costs $0.47 for 8 ounces of sauce. This means that the cost of brand A per ounce of sauce would be

0.47/8 = $0.05875 per ounce of sauce

Brand B sells a can of tomato sauce that costs $2.59 for 15 ounces of sauce. This means that the cost of brand A per ounce of sauce would be

2.59/15 = $0.173 per ounce of sauce.

Therefore, brand A tomato sauce is a better buy because it costs lesser per ounce of sauce.

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