Which property of equality justifies the following sequence of statements?

if 3x+2y=72

and 2y=3z ,

then 3x+3z=72

a. addition property
b. subtraction property
c. multiplication property
d. division property
e. none of the above

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

What are the domain and range of the function f(x)=2^x+1

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?