Estelle tried to evaluate the expression 27 - (8 - 3) x 4. Here is her work: 27 - (8 - 3) x4
= 27 - 5 X 4
Step 1
= 22 x 4
Step 2
= 88
Step 3
Is Estelle's work correct?

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.

Asurvey of 45 teens found that they spent an average of 25.6 hours per week in front of a screen (television, computer, tablet, phone, based on the survey’s sample mean, which value could be the population mean? 2.3 hours 27.4 hours 75.3 hours 41.5 hours

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.