Write the phrase as a variable expression. Use x to represent "a number."The product of 19 and a number
A. 19x
B. 
C. -19x
D. 19 + x
Answer: A
You might also like to view...
Solve the problem.A cylinder with height 12 m and radius 2 m is filled with water and must be emptied through an outlet pipe 3 m above the top of the cylinder. Compute the work required to empty the water in the top half of the tank. Then compute the work required to empty the (equal amount of) water in the lower half of the tank. Round to two decimal places when appropriate.
A. 13,300,246.6 J; 8,866,831.1 J B. 4,433,415.55 J; 4,433,415.55 J C. 4,433,415.55 J; 8,866,831.1 J D. 8,866,831.1 J; 4,433,415.55 J
Solve the problem.The polynomial 0.0034x4 + 0.0047x3 + 0.0053x2 + 0.17x + 1.73 gives the predicted sales volume of a company, in millions of items, where x is the number of years from now. Determine the predicted sales 18 years from now. Round your answer to the nearest hundredth million.
A. $386.41 million B. $390.84 million C. $538.53 million D. $358.01 million
The hyperbola shown in the calculator-generated graph was graphed in function mode with a square viewing window. What are the two functions y1 and y2 that were used to obtain the graph whose equation is given?
10
-10
A. y1 = 5
, y2 = -5
B. y1 = 2
, y2 = -2
C. y1 = 5
, y2 = -5
D. y1 = 5
, y2 = -5
Solve the problem.The profit that the vendor makes per day by selling x pretzels is given by the function 
Find the number of pretzels that must be sold to maximize profit.
A. 0.8 pretzels B. 800 pretzels C. 20 pretzels D. 400 pretzels