Combine like terms.-7y2 + 7y2
A. -7y4
B. -6y2
C. 0
D. 1
Answer: C
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Find an equation of the line satisfying the conditions. Write the equation in slope-intercept form.Through (-6, 7); parallel to 3x + 7y = 3
A. y = - 
x + 
B. y = - 
x + 
C. y = 
x + 
D. y = 
x - 
Solve the problem.The inequality |T - 41.4| ? 7.1 describes the range of monthly average temperatures T in degrees Fahrenheit at a City X. (i) Solve the inequality. (ii) If the high and low monthly average temperatures satisfy equality, interpret the inequality.
A. 38.8 ? T ? 44; The monthly averages are always within 
B. -44 ? T ? 46.6; The monthly averages are always within 
C. 34.3 ? T ? 48.5; The monthly averages are always within 
D. -48.5 ? T ? 55.6; The monthly averages are always within 
Solve for any valid real roots.x4 - 27x2 + 50 = 0
A. x = 25, x = 2
B. x = 5, x = 
C. x = ±5, x = ± i
D. x = ±5, x = ±
Solve the problem.A box has dimensions 2" × 3" × 4". (See illustration.) 
Determine the angle ? formed by the diagonal of the 2" × 3" side and the diagonal of the 3" × 4" side. Round your answer to the nearest degree.
A. 62° B. 65° C. 60° D. 50°