Write a regular expression to solve the following problems:
(a) match a price
(b) match an australian telephone number
(c) remove html comments from a document (d) validate an email address

What engine component is shown in the above figure?

Let r be a robotic arm with a fixed base and seven links. the last joint of r is a prismatic joint, the other ones are revolute joints. give a set of parameters that determines a placement of r. what is the dimension of the configuration space resulting from your choice of parameters?

In cell b18, enter a formula to calculate the amount budgeted for meals. this amount is based on the daily meal allowance and the total travel days (# of nights+1).