Simplify the expression. First use the distributive property to remove any parentheses.7(x - 9)
A. 7x - 16
B. 7x + 63
C. 7x - 9
D. 7x - 63
Answer: D
Mathematics
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Solve the problem.The function P(d) = 1 + 
gives the pressure, in atmospheres (atm), at a depth d feet in the sea. Find the pressure at 47 feet.
A. 
atm
B. 
atm
C. 
atm
D. 
atm
Mathematics
Find the mean for the given sample data.The students in Hugh Logan's math class took the Scholastic Aptitude Test. Their math scores are shown below. Find the mean score.
A. 474.9 B. 465.4 C. 456.3 D. 476.0
Mathematics
Rewrite the expression as an equivalent expression that does not contain powers of trigonometric functions greater than 1.sin3 x
A. 
sin x + 
sin 2x
B. 
sin x - 
sin 3x
C. 
sin x + 
sin 2x - 
sin 3x
D. 
sin x
Mathematics
Solve the equation.
= (-9)2 - 
+ (-5)2
A. 664 B. -664 C. -264 D. 1,032
Mathematics