1a) Which equation demonstrates the commutative property of addition for complex numbers? A: (5 - 10i)[(0 - 10i) +(5 +0i)] = [(5 - 10i)(0 - 10i)]+[(5 - 10i)(5 +0i)]

B: (10 - 5i) + (5 - 10i) = (5 - 10i) +(10 – 5i)

C: (5+ 10i)+(- 5 - 10i) = 0+ Oi

D: [(0 - 5i)+(5-i)] +(5 +i) = (0 - 5i)+[(5 - i) +(5+i)]

1b) Which of the following demonstrates the commutative property of multiplication?

A: (8+6i)(4+2i)=(4+2i)(8+6i)

B: (7-6i)(0+2i)=(7+2i)(0-6i)

C: (2+8i)(2-8i)=20

D: (-5+3i)(-1+i)=(5-3i)(1+i)

The late fee for library books is $2.00 plus 15¢ each day for a book that is late. if maria’s fee for a late book was $3.20, write and solve a linear equation to find how many days late the book was.

Fabian harvests 10 pounds of tomatoes from his garden. he needs 225 pounds to make a batch of soup. if he sets aside 2.8 pounds of tomatoes to make spaghetti sauce, how many batches of soup can fabian make?

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126 a. the attendance was never the same at both plays. b. the attendance was the same on day 5. the attendance was 231 at both plays on that day. c. the attendance was the same on day 13. the attendance was 295 at both plays on that day. d. the attendance was the same on days 5 and 13. the attendance at both plays on those days was 231 and 295 respectively.