If the current son's age is x, the current age of the father is
.
In 20 years they will be, respectively,
and
years old, and we know that the father will be 3 times as old as his son:

The quadratic equation has solutions

So, the two solutions are

We clearly can't accept negative values as solution for a problem involving the age of a person, so the only feasible solution is x=8, and we deduce that the father's age is 8 squared, i.e. 64.
Answer:
the first set of values is correct
Step-by-step explanation:
when x =0,
y = 3(0) -1
y=-1
when x =1,
y=3(1)-1
y=2
when x=2,
y=3(2)-1
y=5
Answer:
the area is 30 you have to muiltly the two together
Step-by-step explanation:
Converting 52ft2 into meters sq
Answer:
24.30 Difference, sale price 56.70
Step-by-step explanation:
30% off 81.00 is 56.70
The difference is 24.30