Regina's teacher recently gave her a homework assi
equations. Si
for a new cell phor
she decided to use the assignment as an opportunity to a savings plan
She created this equation to model the situation. In it, yrepresents the total amount saved for the new cell phone, 74 is the amount of money
she has now, 40 is the amount of money she saves each month for the phone, and xrepresents the numb
a regular amount
74 + 40x=y
She then solved the equation to determine how many months she'd need to save to have enough to purchase the new cell phone Review her
work, and select the error.
Justification
DOO
ON
1: given
2: subtraction property of equality
3: simplification
4: multiplication property of equality
5: simplification
6: substitution, y 834
7: simplification
ANNI
D
18
ż