To start a mobile dog-grooming service, a woman borrowed $2,400. If the loan was for 2 years and the amount of interest was $120, what simple interest rate was she charged?
A. 2.1%
B. 2.5%
C. 2.8%
D. 2.3%
E. 2.4%
Answer: B
Mathematics
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Indicate whether the function is one-to-one.A = {(-1, 19), (12, 19), (4, -10)}
A. No B. Yes
Mathematics
Solve the system using the inverse matrix method.
A. x = -5, y = -10, z = -1; (-5, -10, -1) B. x = 16, y = -86, z = 5; (16, -86, 5) C. x = -48, y = -8, z = -9; (-48, -8, -9) D. x = 37, y = -50, z = 17; (37, -50, 17)
Mathematics
Find the vertices of the ellipse.25x2 + y2 - 450x + 2000 = 0
A. (9, 2
), (9, -2
)
B. (5, 9), (5, -9)
C. (5, 4
), (5, -2
)
D. (9, 5), (9, -5)
Mathematics
Solve. Provide answers in interval notation.x2 - 6x - 7 < 0
A. (-?, -1) B. (-1, 7) C. (7, ?) D. (-?, -1) ? (7, ?)
Mathematics