Charley's grade in the three quarters are 85, 88, and 92. If she targets to have an average grade of greater than 90 in the four quarters this school year, what is the least grade she
should have for the fourth quarter?

Acircus act has 3 times as many elephants as acrobats. jorge noticed that all together there were 56 legs in the circus ring. how many elephants were in the show?

The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z

Point m is located at (-4, -6). what is located 4 units from point m? ( its on a coordinate plane by the way. )