1. what is the simplified form of the following expression?
7m^2+6.5n-4n+2.5m^2-n (1 point)
a. 9.5m^2+1.5n
b. 4.5m^2+1.5n
c.1.5m^2-4.2n
d.9.5m^2-1.5n

Using the graph below, select all statements that are true. a. f(0.6)=0 b. f(-3.2)=-3 c. f(5.1)=5 d. this is the graph of the greatest integer function. e. this graph is one-to-one.

True or false? a circle could be circumscribed about the quadrilateral below.

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?