Problem
Monique son just turned 2 years old and is 34 inches tall .Monique heard that that the average boy will grow approximately 2 5/8 inches per year until the age if 15
write an equation that represents how old monique son will be when he is 50 inches tall let x represent the amount of the year since age 2
Solution
For this case we can do the following equation:
y= 34 + 2 5/8 x
Where y represent the height at any age until 15
Then when can solve this:
50 = 34 + 21/8 x
And we can solve for x and we got:
50-34= 21/8 x
16 = 21/8 x
x= 16*8/ 21 = 128/21 = 6.095
So after 6 years approximately she would be with a height of 50 inches
And that correspond to 8 years