David is selling his art work. He wants to figure out how much he should charge for each painting to make a 20 percent profit. He should . use paper and pencil to figure out 20 percent of the cost for each painting
create a spreadsheet that lists past sales
create a spreadsheet that totals the cost and calculates 120 percent of the total cost
use a spreadsheet to find the total cost of paints and brushes

What is force? what are the types of force ? explain all with suitable examples

Consider the following statements, then select one of the answers below: the signal() function shown below registers "sig_handler()" as the signal handler function for the sigkill signal, without the complexity of using when the sigkill signal is sent to a process running this code, by a user typing "kill -kill ", where the correct process id is used for to target the process, sig_handler() will be executed.

1)consider the following code snippet: #ifndef book_h#define book_hconst double max_cost = 1000.0; class book{public: book(); book(double new_cost); void set_cost(double new_cost); double get_cost() const; private: double cost; }; double calculate_terms(book bk); #endifwhich of the following is correct? a)the header file is correct as given.b)the definition of max_cost should be removed since header files should not contain constants.c)the definition of book should be removed since header files should not contain class definitions.d)the body of the calculate_terms function should be added to the header file.