Is it possible to form a triangle with the given side lengths? If not explain why not. 9, 12, 18

yes
no; 9 + 12 >18

no; 18 + 9 > 12

no; 18 + 12 > 9

7. if the value of x varies directly with the value of y, and x = 3 when y = 21. what is the valu y, and x = 3 when y = 21. what is the value of x when y = 105?

Is the point (0, 8) on the x-axis or y-axis? how do you know?

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.