evaluate the expression when y=-6.
y² + 7y - 5

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

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a

What is always true about a positive integer raised to a negative odd power?