Solve the problem.License plates are made using 3 letters followed by 3 digits. How many plates can be made if repetition of letters and digits is allowed?
A. 308,915,776
B. 1,757,600
C. 17,576,000
D. 1,000,000
Answer: C
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Find all values of ? in [0°, 360°) that satisfy the equation.cos ? = 
A. {210°, 330°} B. {60°, 300°} C. {150°, 210°} D. {60°, 120°}
Solve the equation by the square root property.(x - 14)2 = 81
A. {23} B. {-5, -23} C. {-67} D. {5, 23}
Write a direct variation equation, y = kx, that satisfies the ordered pairs in the table.
A. y = 
x
B. y = -4x
C. y = - 
x
D. y = 
x
Solve the problem.A projectile is fired with an initial velocity of 400 feet per second at an angle of 45° with the horizontal. In how many seconds will the projectile strike the ground? (Round your answer to the nearest tenth of a second.) The parametric equations for the path of the projectile are x = (400 cos 45°)t, and y = (400 sin 45°)t - 16t2.
A. 25.8 sec B. 17.7 sec C. 22.5 sec D. 14.3 sec