If 1-√3 cot (x+15°)=0, find the acute angle x

The total cost of anja’s trip to the dentist was $628.35. she paid a flat fee of $89.95 which included the checkup and cleaning and then had 4 cavities filled, each of which cost the same amount. which shows the correct equation and value of x, the cost of each cavity filling?

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2