10
N
3
Rachel is 3 years older than Sarah. Their ages add to 67. Which of the following systems correctly models this
situation?
A 1r-s=3
(r+s= 67
B. fr-s= 67
r+s= 3
c. [sr=3
Ir-s=67
D
(s-r=3
(r+s= 67

a4 - 3a2 - 1

step-by-step explanation:

step   1   :

equation at the end of step   1   :

  ((a4) -   3a2) -   1

step   2   :

trying to factor by splitting the middle term

2.1     factoring   a4-3a2-1  

the first term is,   a4   its coefficient is   1 .

the middle term is,   -3a2   its coefficient is   -3 .

the last term, "the constant", is   -1  

answer: 20

step-by-step explanation: subtract the minimum date value from the maximum data value to find the date range. in this casem the date range is 42 - 22 = 20

hope this ! : ) ~zane

where r the answers

step-by-step explanation: