If a(x) = 2x - 4 and b(x) = x + 2, which of the following expressions produce a quadradic function? (ab)(x)
(a/b)(x)
(a - b)(x)
(a + b)(x)

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?

Ametal rod needs to be 9 feet and 5.5 inches in length. the sections of the poles being used are each 1 foot and 10.5 inches long. how many 1ft 10.5in sections would be needed to complete the 9ft 5.5in metal rod? and how many inches of material will be left?

How many solutions does the nonlinear system of equations graphed below have?