Ateacher brought 12 packets of crayons. seven of the packets had 9 crayons and the other five packets had 10 crayons. how many crayons did the teacher buy in all

What is the area of triangle pqr on the grid? a triangle pqr is shown on a grid. the vertex p is on ordered pair 7 and 6, vertex q is on ordered pair 1 and 6, and the vertex r is on ordered pair 4 and 2. 5 square units 6 square units 10 square units 12 square units

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?