Morder to solve the system of equations and using the elimination method, which of the following steps could Multiply the first equation by 2 and then add that result to the second equation.
Multiply the first equation by 3 and then add that result to the second equation.
Multiply the second equation by 2 and then add that result to the first equation
Multiply the second equation by 3 and then add that result to the first equation.

Which type of graph would allow us to compare the median number of teeth for mammals and reptiles easily

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.

If jobs arrive every 15 seconds on average, what is the probability of waiting more than 30 seconds?