The standard deviation of the past five monthly returns for pg company are: 2. 75 percent, −0. 75 percent, 4. 15 percent, 6. 29 percent, and 3. 84 percent. What is the standard deviation?.

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Precalculus question, image attached.