59.375 rounded to the nearest tenth

Given a circle with measures of (c, d, and r) and a circle with measures of (c', d', and r'), what is d if c c' = 12 and d' = 0.50? a) 3 b) 6 c) 12 d) 24

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10