Simplify the expression.
4 (x ? 0)
A. 
B. x12
C. 
D. x7
Answer: A
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Find the domain of the rational expression.
A. {x|x is a real number and x ? 7} B. {x|x is a real number} C. {x|x is a real number and x ? 3} D. {x|x is a real number and x ? 3 and x ? 7}
Find the simple interest of the given loan amount. Round to the nearest cent.Loan amount of $900 at an annual percentage rate of 7% for 4 years
A. $252.00 B. $1575.00 C. $25.20 D. $32.14
Solve the problem.Ellen is knitting a scarf with one 3
-inch blue stripe, one 2
-inch green stripe, and one 
white stripe. How wide is the scarf?
A. 
in.
B. 
in.
C. 8
in.
D. 2
in.
Solve the system by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets.3y = 21 - 4x2x = 27 - 3y
A. {(3, -11)}
B. {(-3, 11)}
C. {
4x + 3y = 21 }
D. ?