A square has a side length of (x + 8) feet long. Which expression(s) represent(s) the perimeter of the square, in square feet? SELECT ALL THAT APPLY. Need explanation.

What is the range of the function? f(x)=-2|x+1|? a. all real numbers. b. all real numbers less than or equal to 0. c. all real numbers less than or equal to 1. d. all real numbers greater than or equal to 1

Which expression is rational? 6. , square root two, square root 14, square root 49

Reduce fractions expressing probability to lowest terms. in 3,000 repetitions of an experiment, a random event occurred in 500 cases. the expected probability of this event is?