Determine if the sequence below is arithmetic or geometric and determine the common difference / ratio in simplest form.
300, 30, 3, ...

The system of equations graphed below has how many solutions?

Explain how you do each step what term makes it inconsistent y=2x - 4 ?

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed