Identify the correct inverse trigonometric function to use to stop giving angle

Thelime contains the point(-3,0) and parallel x-3y=3( show all work)

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

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?