–3(c + 14) + 3 = 15 solve for c

c = -18

Step-by-step explanation:

We need to distribute the -3 to each term within the parentheses. This essentially means finding the sum of the product of -3 with each of those inner terms:

-3 * c + (-3) * 14 + 3 = 15

-3c - 42 + 3 = 15

-3c = 15 + 42 - 3 = 54

c = 54/(-3) = -18

c = -18

Step-by-step explanation:

–3(c + 14) + 3 = 15

⇔

–3c - 42 + 3 = 15

⇔

-3c = 15 + 42 - 3

⇔

-3c = 54

⇔

c = - 54/3

⇔

c = -18

After 25 years both the accounts will have the same balance.

Step-by-step explanation:

Let t years, both the account will have the same balance.

As account A has a beginning balance of $500 and grows by $25 per year.

So, the total balance of account A after t years = 500+25t

Similarly, account B has a beginning balance of $750 and grows by $15 per year.

So, the total balance of account A after t years = 750+15t

As both the accounts has the same balance, so

500+25t= 750+15t

25t-15t=750-500

10t=250

t=250/10

t=25 years

Hence, after 25 years both the accounts will have the same balance.