How to solve a system of equations by using elimination and how to tell if you should use addition or subtraction?

The chess club has 18 students. How many different teams of 4 can be formed for competition?

What is the percent of decrease between 80 and 64

A baker sells bread for $6 and rolls for $2 each. The baker needs to sell $36 worth of baked goods by the end of the day. How many loaves of bread must the baker make if 15 rolls at sold?

The sum of the ages of Jon and his brother is 40. Jon's age is 8 more than his brother's age. Find the age of each.

Suppose you are going to graph the data in the table below. What data should be represented on each axis, and what should the increments be? Hours Distance traveled (miles) 1 60 2 35 3 45 4 65 5 55 6 62 7 12 8 65

Miriam's house has a market value of $125,000. The tax accessor evaluated her property tax rate to be 42%. What is the assessed value of Miriam's house? Use the formula: Assessed Value = Market Value x Rate.

A set of data with 100 observations has a mean of 267. There are six outliners in the data set, which have a mean of 688 if the six outliners are removed, what is the mean of the new data set?

The minimum temperature for a particular day was 4 Fahrenheit below 0 the maximum was 16 Fahrenheit higher what was the maximum temperature

The top of a bench has a length of 5ft and a width of 2ft. A second bench is similar to the similar to the first bench. The top of second bench is 3ft wide. What is the length of the top of the second bench?

3y+10x-54=0 5y-2x-34=0