simple physiology math question?

Question

1.) if u knew how tall u were at the age of 2, u can estimate your adult height (in inches). girls can use the expression 25+1.17h where h is the height(inches) at the age of two. boys can use the expression 22.7+1.37h. estimate the adult height of each person to the nearest inch.

A.) a girl who was 34 inches at the age of two
B.)a boy who was 33 inches at the age of two

thanks so much! im horrable at algebra........

Answer 1

Hi,
This is a matter of plugging the numbers into the proper equations:
A) A girl who was 34 inches at age 2.
Equation:
H = 25 + 1.17h (I used H = adult height.)
=25 +1.17(34) (Substitute her height at two for h.)
=25 + 39.78
=64.78
You can do the arithmetic and round off as you see fit.

B) This is the same procedure except with a different equation.
H = 22.7 + 1.3h
= 22.7 + 1.3(33) (Substitute his height at two for h.)
=22.7 + 42.9
=65.6

Try to develop a little more positive attitude about your ability in algebra. I believe that negative thoughts tend to unfavorably influence one's achievement.

Hope the math helps.
FE