Determine whether it is true or false that the given number is a solution of the equation.-4; 4x = -20.
A. True
B. False
Answer: B
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Solve the problem by using addition, subtraction, multiplication, or division as needed.Raisa's car used 16 gallons of gasoline when she drove it 224 miles. How many miles per gallon did it get?
A. 16 miles per gallon B. 14 miles per gallon C. 208 miles per gallon D. 23 miles per gallon
Find the domain and range of the function represented in the graph.
A. Domain: (-?, 3) or (3, ?); Range: (-?, 5) or (5, ?) B. Domain: (-?, ?); Range: (-?, 5] C. Domain: (-?, 3]; Range: (-?, 5] D. Domain: (-?, ?); Range: (-?, ?)
Solve the problem.Suppose the supply and demand for a certain videotape are given by: supply: p = 
q2; demand: p = - 
q2 + 32where p is price and q is quantity.How many videotapes are demanded at a price of $24?
A. About 8 B. About 7 C. About 9 D. About 6
Solve the problem.The cost and revenue equations for a company which produces laptops are: Cost: y = 5000x + 65,000 Revenue: y = 10,000x[where x is the number of laptops and y is the amount (of cost or revenue) in dollars]The equations are displayed in the graph below. The revenue equation is represented by the dashed line and the cost equation by the black line. Use the graph to determine the number of laptops that must be sold for the cost to equal the revenue and then use the equations to find this exact dollar amount.
A. $130,000 B. $13 C. $43,333 D. $65,000