Answer:
No, because he needs to save at least $153, and he will only save $150 over the next ten weeks.
Explanation:
In case when ben wants to save $15 for a week and the total number of weeks is 10 so the total saving amount is $150. Now if the cost of a stereo is less than the total of saving amount so he is confident to purchase the stereo.
Now if the amount that required to be saved is represented by a is more than $150 so he is unable to purchase a stereo
Hence, the correct option is a.