Last month you swim the 50m freestyle in 28.38 seconds. today you swim it in 27.33 seconds what is your percent of change round to the nearest tenth of a percent if necessary

Is the open sentence 5x-2=3x+2 true when x=2? justify your answer.

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"