A CB radio is rated at 7.5 watts, and actual measurements show that is delivers 3.9 watts to its antenna. What is its efficiency? The efficiency is %

(whole number or decimal rounded to two decimal places as needed)

The contents of 3838 cans of coke have a mean of x¯¯¯=12.15x¯=12.15. assume the contents of cans of coke have a normal distribution with standard deviation of σ=0.12.σ=0.12. find the value of the test statistic zz for the claim that the population mean is μ=12.μ=12.

Do some research and find a city that has experienced population growth. determine its population on january 1st of a certain year. write an exponential function to represent the city’s population, y, based on the number of years that pass, x after a period of exponential growth. describe the variables and numbers that you used in your equation.

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers