If the measure of base angle abc is 75°, what is m∠bac? a) 15° b) 30° c) 75° d) 105°

Plz answer asap plz which is a solution to the equation 4b2 − 11b = 28 + 5b2? a) −5 b) −4 c) −3 d) 4

Write the sentence as an equation. z plus 372 is equal to 160

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?