Paintbrushes normally cost $7 each, but they are on sale for $1 off. A paintbrush case costs $16. The expression 7p − p + 16 can be used to find the cost in dollars of buying p paintbrushes on sale plus a case for them. The bar model below simplifies the expression 7p − p + 16 using squares to model combining like terms.

Your friend swims on the school team. in his first four races, his times are 24.7, 23.5, 25.6, and 27.2 seconds. which time listed for his next race would make the range larger?

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

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