If the mean of an exam was 150 with a standard deviation of 30, what percentage of students scored 1 standard deviation
above the mean?

One side of a rectangle is 7 feet shorter than seven times the other side. find the length of the shorter side if we also know that the perimeter of the rectangle is 306 feet.

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Item 1 solve for s. s+24=90 −114 −66 66 114