The closest star to our sun, proxima centauri, is 39,900,000,000,000,000
meters away from earth.
a. write this distance in scientific notation. 3.90 * 10
b. light travels at a speed of 3.0 * 108 meters per second. how can you
calculate the time in seconds that it takes light from proxima centauri
to reach earth? how many seconds does it take? write your answer in
scientific notation and standard notation.

Average salary for a medical assistant is $31,220 which is a 20% income tax bracket how much money would they pay in income tax?

In a sample of 200 residents of georgetown county, 120 reported they believed the county real estate taxes were too high. develop a 95 percent confidence interval for the proportion of residents who believe the tax rate is too high. (round your answers to 3 decimal places.) confidence interval for the proportion of residents is up to . would it be reasonable to conclude that the majority of the taxpayers feel that the taxes are too high?

The graph below shows the line of best fit for data collected on the number of cell phones and cell phone cases sold at a local electronics store on twelve different days. number of cell phone cases sold 50 * 0 5 10 15 20 25 30 35 40 45 number of cell phones sold which of the following is the equation for the line of best fit? a. y = 0.8x b. y = 0.2x c. y=0.5x d. y = 0.25x