Perform the indicated operation.39 cm + 2.3 dm (in centimeters)
A. 6.2 cm
B. 392.3 cm
C. 62 cm
D. 41.3 cm
Answer: C
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Simplify the algebraic expression.-5(2x - 9) - 4x + 8
A. -14x + 53 B. -14x - 37 C. 6x + 53 D. 14x + 53
Sketch the graph of the quadratic function. Identify the vertex, intercepts, and the equation for the axis of symmetry.f(x) = 10 + 7x + x2 
A. vertex: 
x-intercepts: (2, 0) and (5, 0)
y-intercept: (0, 10)
axis of symmetry: x = 
B. vertex: 
x-intercepts: (-2, 0) and (-5, 0)
y-intercept: (0, 10)
axis of symmetry: x = - 
C. vertex: 
x-intercepts: (2, 0) and (5, 0)
y-intercept: (0, 10)
axis of symmetry: x = - 
D. vertex: 
x-intercepts: (-2, 0) and (-5, 0)
y-intercept: (0, 10)
axis of symmetry: x = 
Solve the problem.Printer A can print Helen's class project in 18 minutes. Printer B can print the project in 30 minutes. If the two printers work together, how long would they take to print out the project?
A. 11
min
B. 8 min
C. 90 min
D. 
min
Determine whether the following is a trinomial square.x2 - 25x + 625
A. Yes B. No