Find the function value.
f(2) if f(x) = Y1
A. -3
B. -6
C. -5
D. -4
Answer: C
Mathematics
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Use a sum-to-product identity to rewrite the expression.cos 
- cos 
A. -2sin 
sin 
B. -2sin 
cos 
C. -2cos 
sin 
D. -2cos 
cos 
Mathematics
Find the nonreal complex solutions of the equation.5x2 + 9x + 7 = 0
A. {
, 
}
B. {
, 
}
C. {
, 
}
D. {
, 
}
Mathematics
Solve.A room measures 15 ft by 
The ceiling is 
above the floor. The door is 
by 
A gallon of paint will cover 82.5 ft2. How many gallons of paint are needed to paint the room (including the ceiling and not including the door). Round your answer up to the next whole number.
A. 8 gal B. 12 gal C. 4 gal D. 20 gal
Mathematics
Multiply or divide.
A. 2 B. 20 C. 2000 D. 200
Mathematics