How do you access Pearson Edexcel maths papers (gcse)

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

What is the ratio of the length of an object in yards to the length of the same object in miles?

Match each whole number with a rational, exponential expression 3 square root 27^2find the domain and range of the exponential function h(x)=125^x. explain your findings. as x decreases does h increase or decrease? explain. as x increases does h increase or decrease? explain.