Is 78 a prime or composite number me

The function f is defined by f(x)=xsquared+3x-10 if f(x+5)=xsquared+kx+30, k=find the smallest zero of f(x+5). x=

F(x)= 4x g(x) =x-1 what is f(x) divided by g(x)

The graph of f(x) = |x| is transformed to g(x) = |x + 11| - 7. on which interval is the function decreasing?