Cory stacked 1 1/4 inch thick boards on top of each other. When he finished stacking boards, the stack was 11 1/4 inches
high. How many boards did he stack?

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

Aplane is taking off from bangladesh headed to new york city. at the same time, a plane from new york city is headed to bangladesh is also taking off. the plane bound to new york city is traveling at 600 mph, while the plane traveling to bangladesh is traveling at 400 mph. how far from new york city will the two planes meet if the distance between new york city and bangladesh is 8,000 miles?

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)