Determine whether the given number is a solution of the equation. 12 ( x – 9 ) = 15 ( x + 13 ) + 2                     w h e r e   x = 27

The mathematical model, T = 0.21n + 2.66, approximates the average price of a movie ticket for selected years from 1980 through 2010. T is the average movie ticket price and n is the number of years after 1980. According to the​ model, what is the average ticket price in the year 1990?

Evaluate the given expression for x = -4 and y = 6. 6 x + 2 y + 2 2 x + 3

Perform the subtraction. If​ possible, reduce the answer to its lowest terms. Your work and answer must be in fraction form.    4 5 9 – 1 1 6

Solve the problem.The population of a town is increasing by 500 inhabitants each year. If its population at the beginning of 1990 was 27,021, what was its population at the beginning of 1997?

Exhibit 3-23 Demand and supply curves ​ ​ In Exhibit 3-23, a movement from A to C is best described as a(n):

With an upward-sloping supply curve, which of the following is true ?

When a 2 percent increase in price generates a greater than 2 percent decrease in quantity demanded, then:

We can find the market supply for phones by:

The “other things being equal” clause in the law of demand does allow which of the following factors to change?