How to write 1/4z-1/3-1/7z^2 in az^2+bz

Which graph shows a function with a range of all real numbers greater than or equal to -1

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

Consider the set of all four-digit positive integers less than 2000 whose digits have a sum of 24. what is the median of this set of integers?