marissa subtracted a negative number from a positive number her result was negative is that reasonable explain

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

If g(x) = x+1/ x-2 and h (x) =4 - x , what is the value of ( g*h) (-3)?

Apackage of five erasers cost 0. $.39 at this rate how many how much would 60 erasers cost in dollars and cents