Can you help me please?

What situation is an example of an observational study

Find the solution(s) to x^2-14+49=0

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.