Over the last three evenings, Susan received a total of 117 phone calls at the call center. The third evening, she received 3 times as many calls as the first evening. The second evening, she received 7 more calls than the first evening. How many phone calls did she receive each evening?

a

step-by-step explanation:

when a number is between two straight lines it means the absolute value.

to find absolute value you need to know how many numbers is that number away from 0.

when finding absolute value the number will always come out positive

so absolute value of -3 is 3

absolute value of 3/2 is 3/2

absolute value of -2 is 2

absolute value of 3.5 is 3.5

absolute value of -1 is 1

now put these numbers in order:

a)   |-1|, |3/2|, |-2|, |-3|, |3.5|

(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1