Find the sum of the first 9 terms of an arithmetic sequence where a1 = 8 and a9= 56?
288
64
72
486

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

Do u just plot the numbers on the graph like (1,

2x + 1 < 5 solve the following inequality. then place the correct number in the box provided.