Which of the following functions most quickly reveals the “roots” of the function? a) h(x) = x2 - 7x + 10
b) h(x) = (x - 5)(x - 2)
c) h(x) = (x - 7/2)2 - 9/4

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin

Evaluate cos2θ for cosθ = square root of 3/2