There are 78 students from a local high school attending a concert. the concert hall has 40 rows of seats. the first row has 50 seats, and each row after that has 4 more seats than the one before. if all 78 students sit in one row and are as close to the front row as possible, in which row did the students sit?

a) row 7
b) row 8
c) row 11
d) row 12

Create and solve a linear equation that represents the model, where squares and triangles are shown evenly balanced on a balance beam. assume the weight of a square is 1 unit and the weight of a triangle is unknown.

Evaluate this using ! 0.25^2 x 2.4 + 0.25 x 2.4^2 − 0.25 x 2.4 x 0.65

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight in pounds, w, of the contents that liz will ship to her friend if she must use a medium flat-rate box. use the drop-down menus to explain your answer.