Please help me due soon.

According to the normal model, what percent of receivers would you expect to gain fewer yards than 2 standard deviations below the mean number of yards

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry

Solve the system of equations using the linear combination method. {4x−3y=127x−3y=3 enter your answers in the boxes.