At a video store, the cost of 3 DVDs, 2 video games, and 4 snack packs is $130. The cost of 2 DVDs, 1 video game, and 5 snack packs is $105. The cost of 3 DVDs, 3 video games, and 3 snack packs is $135. Find the cost of each item. Write a system of equations to represent the situation, and solve using matrices. Write the matrix equation to show what is being entered into the calculator.

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?

High school seniors with strong academic records apply to the nation’s most selective colleges in greater numbers each year. because the number of slots remains relatively stable, some colleges reject more early applicants. suppose that for a recent admissions class, an ivy league college received 2851 applications for early admission. of this group, it admitted 1033 students early, rejected 854 outright, and deferred 964 to the regular admission pool for further consideration. in the past, this school has admitted 18% of the deferred early admission applicants during the regular admission process. counting the students admitted early and the students admitted during the regular admission process, the total class size was 2375. let e, r, and d represent the events that a student who applies for early admission is admitted early, rejected outright, or deferred to the regular admissions pool.suppose a student applies for early admission. what is the probability that the student will be admitted for early admission or be deferred and later admitted during the regular admission process?

Which best explains why this triangle is or is not a right triangle ?