The sixth-grade science class found that 20% of the students in the school were left- handed. If there were 800students in the school, how many were left-handed?

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

If f(x) = 4x - 3 and g(x) = x + 4, find (f - g) (x)

The length of time it takes to find a parking space at 9 a.m. follows a normal distribution with a mean of 5 minutes and a standard deviation of 2 minutes. find the probability that it takes at least 8 minutes to find a parking space. (round your answer to four decimal places.)