If the standard deviation of the data values in a sample is 15, what is the variance of the data values?

Me! 50 points! why does when we come home, our door is unlocked and there is grease on the door knob, me solve this , and i don't know what category this goes under

Complete the table for different values of x in the polynomial expression -7x2 + 32x + 240. then, determine the optimal price that the taco truck should sell its tacos for. assume whole dollar amounts for the tacos.

What is the equation of the line that is parallel to the line with the equation y= -3/4x +1 and passes through the point (12,-12)