She saves 10 per week.......after 4 weeks, she had 90
so if she started with nothing, after 4 weeks she would have 40.....but for her to have 90, she would have had to have started with (90 - 40) = 50.
Think about it....she starts with 50....and then saves 10 for 4 weeks giving her 40......and now she has 40 + 50 = 90
so ur answer is : Roberta had $ 50 before she started to save money each week
No.
4 meters is 400 centimeters, so is smaller than 450 centimeters.
The length of the line is 21.
Answer:
There is no common difference
Step-by-step explanation:
Answer: line 2
Explanation: hope this helps