Tina is saving to buy a notebook computer. she has two options. the first option is to $400 away initially and save $30 every month. the second option is to pit $100 away initially and save $50 every month. after how many months would tina save the same amount using either option? how much would she save with either option?

Let n represent the number of months after Tina would save the same amount using either option.

400 + 30n=100 + 50n

400 + 30n − 30n=100 + 50n − 30nSubtraction Property of Equality

400=100 + 20n            Combine like terms.

400 − 100=100 + 20n − 100Subtraction Property of Equality

300=20n

300

20

 =  

20n

20

15 months=n

After 15 months, Tina will save the same amount using either option.

400 + 30(15)=100 + 50(15)

400 + 450=100 + 750

850= 850

After 15 months, Tina will save $850 with either option.

Step-by-step explanation:

i would have to say it is c.