75 students are going on the trip. The number of 7th graders is five more than the number of 6th graders. The number of 8th graders is fifteen less than three times the number of 6th graders. Determine the number of 6th, 7th, and 8th graders attending the trip.

Find the image of a(4, -2) after it is reflected over the line y= 2, then reflected over the line x = 2. (-8,6) o (0.-2) o (0,6) (-8, -2)

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

Solve the triangle. a = 21°, c = 105°, c = 5