Solve the problem.If sin ? = 0.2, find sin (? + ?).
A. 0.2
B. -0.2
C. -0.8
D. 0.8
Answer: B
Mathematics
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Simplify the expression. Assume that all variables are positive.
A. t2z
B. tz2
C. 
D. 
Mathematics
Solve.An arrow is fired into the air with an initial velocity of 160 feet per second. The formula 
models the arrow's height above the ground, y, in feet, x seconds after it was shot into the air. When does the arrow reach its maximum height? What is that height?
A. 6 sec; 1200 ft B. 5 sec; 400 ft C. 5 sec; 80 ft D. 6 sec; 720 ft
Mathematics
Graph the equation.y = x2 + 1
A. 
B. 
C. 
D. 
Mathematics
Perform the indicated operation.-4 ? 19
A. -72 B. 72 C. -95 D. -76
Mathematics