Solve.Alice invested some money at 4% simple interest. At the end of the year the total amount of her original principal and the interest was $2080. How much did she originally invest?
A. $80
B. $2000
C. $520
D. $8320
Answer: B
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Write an expression for the general or nth term, an, for the geometric sequence.-1, - 
, - 
, - 
, . . .
A. an = -1
n-1
B. an = - 
n-1
C. an = an = -1
n-1
D. an = 
n-1
Solve.An arrow is fired into the air with an initial velocity of 160 feet per second. The formula 
models the arrow's height above the ground, y, in feet, x seconds after it was shot into the air. When does the arrow reach its maximum height? What is that height?
A. 6 sec; 1200 ft B. 5 sec; 400 ft C. 5 sec; 80 ft D. 6 sec; 720 ft
Provide the proper response.Find the center-radius form of the equation of the circle given that the endpoints of a diameter of the circle have coordinates 
and 
A. 
2 + 
2 = 289
B. 
2 + 
2 = 613
C. 
2 + 
2 = 613
D. 
2 + 
2 = 1
Use the associative law of multiplication to write an equivalent expression.(3n)(m + 6)
A. 18mn B. 3[n(m + 6)] C. (3n)(6 + m) D. (n3)(m + 6)