Joe owes his sister lisa $12 and his sister kelly $18 his brother david owes joe $20. joe writes the number -12 to represent the amount he owes lisa what number represent the other amounts given above? which person owes the most money?

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

Plz ( true - false) all triangles have interior angles whose measure sum to 90.

Describe the end behavior of the function below. f(x)=(2/3)^x-2 a. as x increases, f(x) approaches infinity. b. as x decreases, f(x) approaches 2. c. as x increases, f(x) approaches -2. d. as x decreases, f(x) approaches negative infinity.