Express the indicated number in standard notation or trigonometric notation, as directed.Express the indicated number in standard notation. 
A. 4
B. 4 + 4i
C. 4 - 4i
D. 4i
Answer: D
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Solve the equation by using the quadratic formula.x2 + 7x + 7 = 0
A. 
B. 
C. 
D. 
Solve.The speed of a ball dropped from a tower is given by the linear function f(t) = 32t where f(t) is in feet per second and t is the number of seconds since the ball was dropped. Find the speed of the ball after 3 seconds.
A. 32 feet per second B. 96 feet per second C. 3 feet per second D. 86 feet per second
Solve the problem. Round to the nearest cent.The store where Anna-Marie is a salesperson offers a series discount of 10/30 on any clothes bought at the store. What is the cost of a $53 sweater after discount?
A. $19.61 B. $37.10 C. $31.80 D. $33.39
Find the real solutions, if any, of the equation. Use the quadratic formula.2x2 - x + 4 = 0
A. {
, 
}
B. {
, 
}
C. {
, 
}
D. no real solution