On Tuesday 194 first graders, 225 second graders, and 187 third graders bought lunch. What is the best estimate of the number of students who bought lunch? O A. 650 B. 600 O C. 550 D. 500 E. 400​

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park is the cost of admission proportional to the amount of people entering the amusement park? explain.

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?

Over the course of a month, a person's weight decreases. what type of relationship is this? a. positive relationship