A. 0.4
B. 1
C. -1
D. 0.2
Mathematics
12x²y + 12xy² = ?
A. 12xy(x + y)
B. 12xy(x² + y)
C. 12xy(xy + y)
D. None of these
Algebraic identity: a³ + b³ = ?
A. (a + b)(a² – ab + b²)
B. (a – b)(a² – ab – b²)
C. (a + b)(a² + ab + b²)
D. (a + b)(a² + b + b²)
A retail store has monthly fixed costs of $3,000 and monthly salary costs of $2,500 for each employee. If the store hires x employees for an entire year, what is the total cost?
A. C = 3,000 + 2,500x
B. C = 12(3,000 + 2,500x)
C. C = 10(3,000) + 2,600x
D. C = 4,000 + 12(2,700x)
7.5 million in numbers is written as:
A. 79000
B. 880000
C. 7500000
D. 7700000
The place value of 9 in 0.06945 is:
A. 9/1000
B. 9/95
C. 9/150
D. 9/10555
Which of the following best models the exponential population growth of rats from 20 to 25 in 2 years?
A. P=5t+20
B. P=20(5)t
C. P=20(1.25)^t
D. None of these
