Answer
2 years
Work Step by Step
x = years, y = total height
$3+x=y$ and $4 + .5x=y$
$3+x = 4+.5x$
$3+x - 3 - .5x = 4+.5x- 3 - .5x$
$.5x = 1$
$2*.5x = 2*1$
$x = 2$
$3 + x = y$
$3 + 2 = y$
$5 = y$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 6 - Systems of Equations and Inequalities - 6-1 Solving Systems by Graphing - Practice and Problem-Solving Exercises - Page 363: 20
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