Can someone answer this question please and thank you.

$1200

Step-by-step explanation:

According to the question,

$500 for airline ticket plus $100 each day .

Therefore, a seven day vacation would cost you $500 for the airline ticket plus $100 times seven days .

That is $500 + ( $100 x 7)

$500 + $700

$1200

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