Perform the indicated operations. Write the resulting polynomial in standard form.(3x4 - 7x3) + (2x4 - 9x3)
A. 5x8 - 16x6
B. -11x14
C. -11x7
D. 5x4 - 16x3
Answer: D
Mathematics
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Solve the equation after making an appropriate substitution.x + 
= 56
A. {8} B. {64} C. {49} D. {7}
Mathematics
Solve the problem.A car travels 400 miles on level terrain in the same amount of time it travels 160 miles on mountainous terrain. If the rate of the car is 30 miles per hour less in the mountains than on level ground, find its rate in the mountains.
A. 20 mph B. 40 mph C. 50 mph D. 80 mph
Mathematics
Find the LCD. Do not combine fractions.
, 
A. 10a2b2 B. a2b2 C. 3ab D. 3a2b2
Mathematics
The graph of a linear function f is shown. Write the equation that defines f. Write the equation in slope-intercept form.
A. y = -1 B. x = 1 C. x = -1 D. y = 1
Mathematics