Add or subtract.(8x8 + 4x7 - 6x6 + 4) - (3x8 - 8x7 + 9x6 - 6)
A. 11x8 - 4x7 + 3x6 - 2
B. 5x8 - 4x7 + 3x6 - 2
C. 11x8 - 4x7 + 3x6 + 10
D. 5x8 + 12x7 - 15x6 + 10
Answer: D
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Solve the differential equation subject to the initial conditions.2 
- 4xy = 8x; y = 3 when x = 0
A. y = 2 + 3ex2 B. y = -1 + 4ex2 C. y = -2 + 5e-x2 D. y = -2 + 5ex2
Write the number in scientific notation.0.00004002
A. 4.02 × 10-4 B. 4.002 × 10-5 C. 4.02 × 10-5 D. 4.002 × 10-4
Determine the slope and y-intercept for the equation.2x - 5y = 2
A. slope: m = 
; y-intercept: b = - 
B. slope: m = 2; y-intercept: b = 2
C. slope: m = 
; y-intercept: b = 
D. slope: m = 
; y-intercept: b = 
Use the graph to determine the function's domain and range. Write the domain and range in interval notation.
A. domain: (-?, -4) or (-4, ?) range: (-?, 1) or (1, ?) B. domain: (-?, -4] range: (-?, 1] C. domain: (-?, ?) range: (-?, 1] D. domain: (-?, ?) range: (-?, ?)