Seismologists use the Richter scale to express the magnitude M of an earthquake using the formula M= 2/3log(E/10^11.8) where E is the energy released in ergs. In 1906 an earthquake in San Francisco measured 8.0 on the Richter scale.

When drawing a trend line for a series of data on a scatter plot, which of the following is true? a. there should be an equal number of data points on either side of the trend line. b. all the data points should lie on one side of the trend line. c. the trend line should not intersect any data point on the plot. d. the trend line must connect each data point on the plot.

"you know, playing tennis is healthier than watching a tennis match on television," katya remarked to her couch potato brother. in this sentence, healthier is a/an a. superlative. b. comparative. c. positive form. d. adverb.

What is the sum of these mixed numbers 2 1/8 + 4 3/8