Rewrite the radical expression using rational exponents. Assume all variables represent nonnegative real numbers.
7
A. b-7/9
B. b-9/7
C. b7/9
D. b9/7
Answer: C
Mathematics
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Find the infinite sum accurate to three decimal places.
A. -0.320 B. -0.859 C. 0.460 D. 0.859
Mathematics
Solve.Suppose the number of Quickie hamburgers (in millions) served yearly can be modeled by 
Approximate how many years it takes for the number of hamburgers served to reach 107 million. Round to the nearest year.
A. 7 yr B. 9 yr C. 10 yr D. 8 yr
Mathematics
Write the augmented matrix for the system. Do not solve the system. 6x + 2z = 10 4y + 7z = 26 9x + 3y + 7z = 32
A. 
B. 
C. 
D. 
Mathematics
For the system of equations, state whether there is one, none, or infinitely many solutions. If there are one or more solutions, give all values of x, y, and z that satisfy the system.
What will be an ideal response?
Mathematics