Determine whether the given equation is a rational function.f(x) = -2 + 
A. Yes
B. No
Answer: A
Mathematics
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Decide whether or not the matrix is a probability vector. 
A. No B. Yes
Mathematics
If A denotes the area of the sector of a circle of radius r formed by the central angle ?, find the missing quantity. If necessary, round the answer to two decimal places.r = 18 feet, A = 84 square feet, ? = ?
A. 1,560,152.87° B. 29.72° C. 780,076.43° D. 14.86°
Mathematics
Graph the equation.2x + 4y = 8
A. 
B. 
C. 
D. 
Mathematics
A rock is dropped from a balloon hovering at 4800 ft above the ground. Its velocity at time t seconds is 
feet per second. Find how long it takes for the rock to reach the ground.Enter just a real number to one decimal place (no units).
Fill in the blank(s) with the appropriate word(s).
Mathematics