Juan scored 7 points higher on his midterm and 20 points higher on his final than he did on his first exam. If his mean (average) score was 39, what was his score on the first exam?
?
Please enter your answer as a number without the units.
Fill in the blank(s) with the appropriate word(s).
30
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Identify and graph the polar equation.r = 6 - cos ?
A. limacon with no inner loop and no dimple
B. limacon with no inner loop and no dimple
C. limacon with inner loop
D. limacon with inner loop
Find the complex zeros of the quadratic function.g(x) = 4x2 - x + 3
A. x = 1 ± 
B. x = 
± 
i
C. x = - 
, x = 
D. x = 
± 
i
Solve the problem.Use the formula L = 10 ? log 
, where the loudness of a sound in decibels is determined by I, the number of watts per square meter produced by the sound wave, and 
A certain noise produces 9.92 × 10-5 watts per square meter of power. What is the decibel level of this noise?
A. 70 db B. 184 db C. 8 db D. 80 db
Let x be a number. Translate the expression into an English phrase.54 - x
A. 54 less than a number B. 54 decreased by a number C. A number less 54 D. A number decreased by 54