X - liters of $45 per liter y - liters of $35 per liter We need 200 liters worth of $40 per liter
A) x + y = 200 liters B) .45x + .35y = .40 * 200 B) .45x + .35y = 80 We multiply equation A by -.45 A) -.45x -.45y = -90 liters Then we add A and B -.10y = -10 y = 100 and therefore x = 100 So we need 100 liters of $45/liter and 100 liters of $35/ liter
y > 0 best describes the range of the function f(x) = 2(3)x. A function whose value is a constant raised to the power of the argument, especially the function where the constant is e
By definition of normal distribution, ≈68% of the data is within 1 standard deviation of the mean. Therefore 68% of IQs are between 85 and 115, and half of that is on the lower end, 85 to 100.
