How many possible sandwiches: 4 types of bread & 6 types of cold cuts?

Sorry guys but as you have a small brain

You are on a cycling trip around europe with friends. you check the weather forecast for the first week. these are the temperatures for the week. sun mon tues wed thurs fri sat 16°c 20°c 24°c 28°c 28°c 23°c 15°c what is the mean temperature forecast for the week?

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are: