Solve.The horsepower h generated by a particular electric motor depends on its rotational speed ?, measured in revolutions per minute (rpm). The table below summarizes the data collected by a research engineer who is analyzing the motor's characteristics: 
On log-log paper, graph h as a function of ?.
What will be an ideal response?
Graph on separate log-log paper.
Mathematics
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Solve the problem.Find the acute angle ? (in degrees) that satisfies the equation ? = cos-1 
.
A. 30° B. 45° C. 330° D. 315°
Mathematics
Match the equation of the ellipse with the appropriate description.
= 1 - 
A. x-intercepts (9, 0), (-9, 0); y-intercepts (0, 25), (0, -25) B. x-intercepts (3, 0), (-3, 0); y-intercepts (0, 5), (0, -5) C. x-intercepts (5, 0), (-5, 0); y-intercepts (0, 3), (0, -3) D. x-intercepts (25, 0), (-25, 0); y-intercepts (0, 9), (0, -9)
Mathematics
Graph the function using translations.
?
?
A. ?
B. ?
C. ?
D. ?
Mathematics
Find the real solutions of the equation.
= 9
A. {79} B. {81} C. {121} D. {83}
Mathematics