Write the complex number in rectangular form using exact values if possible. Otherwise, round to one decimal place.6.33(cos 223.6° + i sin 223.6°)
A. 1.8 + 1.7i
B. -4.4 - 4.6i
C. -1.8 - 1.7i
D. -4.6 - 4.4i
Answer: D
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Identify the place value of the digit 5 in the decimal number. 7.912051
A. hundred-thousandths B. hundredths C. thousandths D. ten-thousands
Simplify the expression. Assume all variables represent positive real numbers.- 
A. 10
B. not a real number
C. -16
D. -4
Solve. When necessary, round answers to two decimal places.For a school walk-a-ton, Rebecca got pledges totaling $9 per mile walked. If she walks 10,560 feet, how much money will she have collected for the walk-a-thon?
A. $18.00 B. $95,040.00 C. $54.00 D. $2.00
In the diagram
(a) The pair ?3 and ?5 are ________________
(b) The pair ?1 and ?7 are ________________
(a) The pair ?3 and ?6 are ________________
(a) The pair ?1 and ?8 are ________________
(a) The pair ?4 and ?8 are ________________