You have to distribute the 4 to the numbers in the parenthesese. So 4 times 3x which is 12x and 4 times 5 which is 20 so now you get 12x plus 20 equals 8. Now you have to subtract 20 from 8 which is -12 so now you have 12x=-12 now divide the 12 from x and 12 from -12 and so now you have x=-1
Answer:
Year 29 $2,956.63 Total Interest $40,643.25 Balance $48,443.25
Step-by-step explanation:
Base amount: $7,800.00
Interest Rate: 6.5% (yearly)
Effective Annual Rate: 6.5%
Calculation period: 29 years
9.50 + (2.20)r
For example if he fixed 3 watches
9.50 + (2.20)3
We plug in 3 for r and he makes 6.60 extra.
I=prt.
I= $200 X 4% X 7.
I= 8 X 7.
I= 56. Her total interest earned was $56 :)
