If james is starting to save $150 to buy a new cell phone. In January he saved $5. In February he saved twice as much as he saved in January for a total of $15. If James continues to save twice as much each month as he saved the previous month, in which month will his totals savings be enough to buy the phone?

Need a step by step explanation please!

Lv beethoven software supplies customized software to a managed healthcare system. lv beethoven software's costs for the software is $1,723,000. lv beethoven software sells the software to the healthcare system for $3,816,981.10. overhead expenses are estimated at 47% of the selling price. what is lv beethoven software's net profit to the nearest dollar?

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

This is about circle theorems. someone asap : (