Answer:
Using a graphing calc.
Step-by-step explanation:
To simplify the equation combine the like terms:
-2x^2 - 10x^2 = -12x^2
3-10 = -7
The simplified expression is -12x^2 + 5x - 7
Answer:
.......
Step-by-step explanation:
20-year period of time $600 + $80 = $680 Step 3: Divide the total dollar amount of return (Step 2) by the original investment.