What is the greatest common factor of 9 and 42 and 57

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park is the cost of admission proportional to the amount of people entering the amusement park? explain.

Which is the best estimate of the product of 0.9 x 0.88? 0 0.25 0.5 1

F(x) = 2x + 1? h(x) = x – h(x) = x + h(x) = x – 2 h(x) = x + 2