Find the discriminant and the number of real roots for this equation.
4x2 + 12x + 9 = 0
a. -144; one real root
b. -144; no real roots
c. 0; one real root
d. 0; two real roots

Adifferent website gives the cost for the first train as £56.88 and the second train as £20.11 with a £9.50 charge for cycle storage for the whole trip. how much would the journey cost you?

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.