A man is six times as old as his son. twenty years time the man is twice as old as his son. find the age of the man whn his son was born

The parabola opens: y=√x-4 (principal square root) up down right left

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.

Select the correct answer. what is the exact value of sin (157.5°)? a. 'sqrt(2 - sqrt(2))/2 b. *"-"'sqrt(2 + sqrt(2))/29 c.'sqrt(2 + sqrt(2))/4" d. "-"sqrt(2 + sqrt(2))/4)