{ x + y = 1 2x - 3y = -18

For the function, f(x) = -5x 2, find f(-4).

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).

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