Answer:
Incomplete problem, read the step-by-step.
Step-by-step explanation:
$1200-$300=$900
5% of $900 is $45
You didn't say if the 5% is per month or per year, if you want more help, comment on this answer the per year/whatever/month and then I'll help you further into this word problem.
Hope this helped! :)
I can probably help, but what do you know already about this ?
Answer:
S = 7cm
Step-by-step explanation:
A = 49cm² = 7 × 7 (Square root of 49 as Area = s²)
S = 7cm