Amber is on a family cell phone plan with the other 2 members of her family. the family gets 630 shared cell phone minutes a month, and each family member is limited to his or her equal share of the minutes. the only free calls are calls between family members. how many minutes per day can amber talk on her cell phone with her friends during a 30-day month, without going over her share of the minutes? a. 210 b. 7 c. 5 d. 21

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column

sorry man i accidentally pressed yes my bad

step-by-step explanation: