Solve the problem.A rumor is spread at an elementary school with 1200 students according to the model 
where N is the number of students who have heard the rumor and d is the number of days that have elapsed since the rumor began. How many students will have heard the rumor after 5 days?
A. 495 students
B. 406 students
C. 629 students
D. 661 students
Answer: D
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Perform the indicated operation.
A. 5x2 - 2 B. x2 - 2x + 2 C. 5x2 + 2x - 2 D. x2 + 2x - 2
Rainbow Inc.'s sales equal $200,000 each month. Rainbow generally permits credit purchases with terms of 3/10 net 30. Ten (10) percent of total sales are for cash, and the remaining 90 percent pay on credit. Of the credit sales, 20 percent are paid on Day 10 of the billing cycle, and the rest pay on Day 30 (in the following month). What is the amount of the discounts that Rainbow's customers normally take?
A. $850 B. $720 C. $560 D. $485 E. $900
Find the first term and the common difference.
, 
, 
, 
, . . .
A. a1 = 
, d =
B. a1 = 
, d = - 
C. a1 = 
, d =
D. a1 = 
, d =- 
Simplify 
if 
.
What will be an ideal response?