William says that 15 years from now, his age will be 3 times his age 5 years ago. If x represents William’s present age, complete the following sentences. 15 years
18 years
x − 15 = 3(x + 5)
x + 15 = 3(x − 5)

the formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle. if a circle is tangent to the x-axis at (3,0), this means it touches the x-axis at that point.

correct answer was 0.5