Yes or No, is each pair of ratios or rates is equivalent? Explain your reasoning. Be specific. 3 hours worked for $12.00; 9 hours worked for $36.00

Yes

Step-by-step explanation: Working 3 hours for $12 is the same as working 9 hours for $36 in both equations you earn $4 an hour

687.09 dollars       happy now

step-by-step explanation: 6870

1857 times .63 equals 1169.91 subtract that from 1857 you get 687.09

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