Write a mathematical expression for the word phrase.50 added to -11
A. 50 - 11
B. 11 + 50
C. -11 + 50
D. 11 - 50
Answer: C
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What is the meaning of the expression?4x3
A. 4 ? x ? x ? x B. 4 ? 4 ? 4 ? x C. 4x ? 4x ? 4x D. 4 ? x ? 3
Let U = {q, r, s, t, u, v, w, x, y, z} A = {q, s, u, w, y} B = {q, s, y, z} C = {v, w, x, y, z}. Determine the following.A ? (B ? C)
A. {q, r, w, y, z} B. {q, w, y} C. {q, y, z} D. {q, s, u, w, y, z}
Answer the question(s) based on the following situation: Over the last 80 years records have been kept of the annual rainfall in the Tasmanian desert. The distribution of annual rainfall is approximately normal and has no outliers. The minimum of 4.5 inches of rain occurred in 1952; the maximum of 11.7 inches of rain occurred in 1934.What is the approximate average annual rainfall over the last 80 years?
A. 3.6 inches B. 7.2 inches C. 1.2 inches D. 8.1 inches E. none of these
The growth rate of the bacterium, a common bacterium found in the human intestine, is proportional to its size. Under ideal laboratory conditions, when this bacterium is grown in a nutrient broth medium, the number of cells in a culture doubles approximately every 20 min. If the initial cell population is 10, determine the function Q(t) that expresses the exponential growth of the number of cells of this bacterium as a function of time t (in minutes). How long will it take for a colony of 10 cells to increase to a population of 1 million? If the initial cell population were 100, how would this alter the model? ?
A. 
B. 
C. ?
D. ?