We know that a boa constrictor is 18 inches long at birth and grows 8 inches per year. To write and equation that represents this situation, consider that x will represent the age of the boa constrictor. Then, the growth is equal to the sum of the birth length and the product of the growth per year multiplied by the age of the snake.
Length= Birth Length+ Growth * Years
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y=18+8x
Since we want the length in feet, we need to convert inches to feet. To do so, let's recall that 1 foot is equal to 12 inches. This means that we can divide each quantity by 12 to get the length in feet. Let's do it!
y=18/12+ 8/12x
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y= 3/2+ 2/3x
