Solve the equation.
- 4 = 1
A. -21
B. -35
C. 21
D. 35
Answer: D
Mathematics
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Is the first number divisible by the second number? Answer yes or no.7,646,947; 11
A. Yes B. No
Mathematics
Solve.
= x - 3
A. 6 B. 1, 6 C. 1, 13 D. 6, 13
Mathematics
Add or subtract. Simplify by collecting like radical terms, if possible.-2x
+ x
- 2y
A. (-2xy + x2 - 2y2 )
B. (-2xy2 + x3 - 2y3 )
C. (-2x2y + x2 - 2xy2 )
D. (-2x + x2 - 2y2 )
Mathematics
Solve the problem.A Ferris wheel has a diameter of 320 feet and the bottom of the Ferris wheel is 11 feet above the ground. Find the equation of the wheel if the origin is placed on the ground directly below the center of the wheel, as illustrated. 
A. x2 + (y - 160)2 = 25,600 B. x2 + (y - 160)2 = 102,400 C. x2 + (y - 171)2 = 25,600 D. x2 + y2 = 25,600
Mathematics