The area of the red square is 16 ft2. the area of the yellow square is 25 ft2. what is the area of the green square? a) 3 ft2 b) 9 ft2 c) 81 ft2 d) 128 ft2 !

There is a line with slope 1/a going through the point (a, a²). find the equation of the line perpendicular to this line at this point. (don’t let this problem intimidate you! solve the problem as you would if i’d given you specific values. just use variables instead.)

Phillip had some bricks. he stacked them in 6 equal piles. which expression shows the number of bricks phillip put in each pile? let the variable m stand for the unknown number of bricks. m + 6 m÷6    m−6    6m

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