A rectangle has side lengths of 4cm and (x+3)cm. It has an area of 20 cm squared. (Hint: area = length x width) write an equation for this situation.

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The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Lindsay used two points, (x,y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?