Calculate a margin of error with sample size 1025 and a standard deviation of 1.5.

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?

98 point question what is the record for most points in one

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1