Suppose you want to know whether the eighth-grade music students at a school spend more time practicing their instruments or playing computer games. Explain how you would get a representative sample from the population.

4. The sum of iwo numbers is 36. Twice the first number minus the second is 6. Find the numbers.

Anise ran 5 3/8 miles in the race. Marsha ran 3 7/8 miles. How much farther did Anise run than Marsha? Express your answer in simplest mixed-number form.

An train station has determined that the relationship between the number of passengers on a train and the total weight of luggage stored in the baggage compartment can be estimated by the least squares regression equation y=103+30x.

Fraction | decimals|percent | 58%

At a factory, the number of jars that need a lid is modeled by the function j (m) = - 6m+600, where m is the number of minutes after noon. (A) find the intercepts for the function. (B) interpret the x-intercept in terms of the situation.

Sam painted the walls shown. He took 12 hours to paint the walls. If Sam took the same amount of time to paint each wall, how long did he take to paint 1 wall?

The position of an object at time t is given by s (t) = 7 - 14t. Find the instantaneous velocity at t = 7 by finding the derivative.

every month, omar buys pizzas to serve at a party for his friends. In may, he brought three more than twice the number of pizzas he bought in April. If Omar bought 15 pizzas in may, how many pizzas did he buy in April

Forty-three is 7 less than twice a number. What is the number?

Suppose b = 2a-16 and b = a+2. What is the value of a?