Find the exact value of x. (25)^(x-20)=((1)/(125))^(x)

If eh = hg and hg=16, find the diameter of k

Abox of chocolates costs $7. which equation relates the number of boxes sold (x) and total cost of the boxes sold (y)?

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