The graph of a quadratic function has vertex (1, 4), y-intercept at (0, 1) and passes through the point (3, -8). What is the equation of the quadratic function? A. f(x)= -(x-1)^2-4
B. f(x)= -3(x-1)^2-4
C. f(x)= -(x-1)^2+4
D. f(x)= -3(x-1)^2+4

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.