Write as an addition problem and find the sum.The team gained 18 yards on the first play and lost 2 yards on the second. What was their net gain or loss?
A. 18 + -2 = 20 yards
B. 18 + 2 = 20 yards
C. 18 + 2 = 16 yards
D. 18 + -2 = 16 yards
Answer: D
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Solve.The orbit of a planet, in a galaxy far, far away, is an ellipse. If the center of the ellipse is at the origin, an approximate equation for the orbit is 
+ 
= 1, where x and y are measured in millions of miles. Find the largest possible distance across the ellipse. Round the answer to the nearest million miles.
A. 13,710 million miles B. 117 million miles C. 83 million miles D. 166 million miles
Use the substitution method to solve the system of linear equations. 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.-6x - 37 = -7y2x - 2y = -10
A. {(x, y) 
}
B. (2, 7)
C. (1, 8)
D. No solution
Simplify the expression.
A. 
B. 
C. 
D. 
Solve the inequality. Express your answer using interval notation.|5x - 1| ? 5
A. [- 
, 
]
B. (- 
, 
)
C. (-?, - 
] or [
, ?)
D. (-?, - 
) or (
, ?)