2x squared + 9x=-5 i need to solve for x

Which graph represents 2x-5y< 15

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label