The circle graph below shows the number of hours per week a college student spends studying each subject of a college core curriculum.
about 60%
about 45%
about 25%
about 30%

Which point is on the line y=-2+3? (-2,-1) (3,3) (3,-3) (-3,-9)

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

How many quarts of a 50% solution of acid must be added to 20 quarts of a 20% solution of acid in order to get a 40% solution of acid?