In this problem, we will be evaluating simple math expressions that contain numbers, , *, (, and ). Specifically, you will write a function that takes in a string representing an expression and returns an integer representing its result. The input string will not contain any spaces. The following are examples of input and corresponding output:

Which of the following refers to refers to how well the control system responds to sudden changes in the system. a)-transient regulation b)- distributed regulation c)-constant regulation d)-steady-state regulation

An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0

What are the major differences between injection molding and extrusion?