Add or subtract as indicated.Subtract (3x - 30y) from the sum of (-2x + 3y) and (9x - 12y).
A. 8x + 45y
B. 10x - 39y
C. 4x + 21y
D. -4x - 21y
Answer: C
Mathematics
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Use rational equations to solve the problems.1.45% of gross monthly income goes to Medicare. If a person's gross pay is $713.49, then what is the Medicare contribution?
A. $5.17 B. $1,034.56 C. $10.35 D. $20.69
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Solve and check.-11.224 = -4.88x
A. x = 2.3 B. x = 7.18 C. x = 7.28 D. x = -2.58
Mathematics
Find the product.(x + y)(x - y)
A. x2 + y2 B. x2 - xy + y2 C. x2 - y2 D. x2 - 2xy - y2
Mathematics
Solve the system of equations using substitution.
A. x = -12, y = 5; x = -5, y = 12 or (-12, 5), (-5, 12) B. x = 12, y = -5; x = 5, y = -12 or (12, -5), (5, -12) C. x = 12, y = 5; x = 5, y = 12 or (12, 5), (5, 12) D. x = -12, y = -5; x = -5, y = -12 or (-12, -5), (-5, -12)
Mathematics