In the formula for average rate of change, what does the triangle in front of the x and y stand for?

Simplify 3 squared times 21 squared

the sum of ages the ages of yao and kwao is 29 years. yao is 3 years older than kwame. how old are the two people

2-a - (-b) + c + (-a) - b (-c)

A country is considering two income tax rates. Geoffrey is comparing what his tax bill would be under each plan. Under plan A, he pays 5% on the first $10,000. The next $85,000 is taxed at a rate of 10%.

Andy's family drove 3 kilometers to the grocery store. how many meters did they drive?

Michael and Lindsey are saving money. Michael begins with $20 and saves $5 per week. Lindsey begins with no money but saves $10 per week. Enter the number of weeks it will take for Lindsey and Michael to save the same amount of money.

Find and interpret the marginal frequencies.

On a recent Saturday, a total of 1086 people visited a local library. Of these people, 269 were under age 10, 466 were aged 10-18, 185 were aged 19-30, and the rest were more than 30 years old. One person is sampled at random.

A company sells desks for $155 each. To produce a batch of x desks, there is a cost of $83 per desk and a fixed or setup cost of $9,300 for the entire batch. Determine a function that gives the profit in terms of the number of desks produced.

Find the perimeter of a triangle xyz (0,2) (4,-1) (-2,-1)