Ar astruction Expressions in One Variable
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Slide
9
Writing and Evaluating Expressions
Susan is four years older than half Nathan's age. If Nathan's age is represented
by the variable n, what expression represents Susan's age?
Nathan's age =
Susan's age = (n) +

The system of equations is

 and  

Fred's age is 36 years old and Nathan's age is 9 years old

Step-by-step explanation:

Let

f > Fred's age

n > Nathan's age

we know that

> equation A

> equation B

equate the equations and solve for n

Find the value of f

therefore

Fred's age is 36 years old and Nathan's age is 9 years old

the image of (6, 9) under a dilation is (4, 6). the scale factor is

look at photo