hallie used a birthday check her mother gave her to start a savings account. she plans to save $25 per month as well.after 9 months hallie has $300 . write and solve a linear equation to fins the original check amount from hallies mother
use y=mx+b
Let x be the original check amount from Hallie's mother.
Since she plans to save $25 per month, after 9 months she would have saved 9 * $25 = $225.
The total amount in her savings account after 9 months is $300, so x + $225 = $300.
To solve for x, we can rearrange the equation to isolate x:
x = $300 - $225
x = $75
Therefore, the original check amount from Hallie's mother was $75.