Rationalize the denominator. Assume that all variables represent positive real numbers.-
A. - 
B. - 
C. - 
D. - 
Answer: B
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Solve the problem.A couple have bought a new house and are comparing quotes from two moving companies for moving their furniture. Company A charges $80 for the truck and $50 per hour for the movers. Company B charges $60 for the truck and $55 per hour for the movers. Create a cost equation for each company where y is the total cost and x is the number of hours of labor. Write a system of equations.
A. y = 80x + 50 y = 60x + 55 B. 50y = x + 80 55y = x + 60 C. 50y = 80x 55y = 60x D. y = 50x + 80 y = 55x + 60
Solve the problem.Determine whether the ordered triple 
is a solution of the system of equations.9x + 6y + 9z = 56x + 3y - 3z = 14 x - y + 2z = -3
A. No B. Yes
Use the Urban Prices Index Table to answer the question. The table shows what $100 worth of an item costs today. 
*All figures are expressed as a percent of the base of 100 from two decades ago.Urban area: ChicagoWhat does $100 of Medical cost today?
A. $371.90 B. $112.40 C. $367.60 D. $354.30
Solve the problem.Using the matrices X =
and L = 
, verify that 
(matrix subtraction is not commutative).
What will be an ideal response?