Which step explains how to find the value of a in 6a=72

The water has been on the stove y=9.5x+62.1 after how many minutes will the tempature be 138.1 f

Abarbecue sold 26 hamburgers and hot dogs. hamburgers sell for $3.50 each and hot dogs sell for $2.00 each. if the barbecue made $70 in sales, determine and state the number of hot dogs sold.

The graph of f(x) = |x| is transformed to g(x) = |x + 11| - 7. on which interval is the function decreasing?