Please help me please i really need help please

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

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.