Solve using the elimination method. If the system has an infinite number of solutions, use set-builder notation to write the solution set. If the system has no solution, state this. x + 4y = 152x + 3y = 5
A. No solution
B. (-6, 6)
C. (5, 6)
D. (-5, 5)
Answer: D
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Solve the problem.About how accurately must the interior diameter of a cylindrical storage tank that is 16 m high be measured in order to calculate the tank's volume within 0.2% of its true value?
A. Within 0.1% B. Within 0.2 meters C. Within 0.2% D. Within 0.1 meters
A reflector for a satellite dish is parabolic in cross section, with the receiver at the focus F. The reflector is 1 ft deep and 30 ft wide from rim to rim (see the figure). How far is the receiver from the vertex of the parabolic reflector? 
?
Round to the nearest foot, if necessary.
?
?
A. 59 ft
B. 51 ft
C. 56 ft
D. 53 ft
E. 52 ft
Find the indicated term using the given information.a = 10, d = -5; a8
A. 45 B. -30 C. 50 D. -25
Perform the indicated operations and simplify. Assume all variables represent positive real numbers.
+ 9
+ 2
A. -83
B. -72
C. 83
D. 6