1576729
26.11.2021 •
Mathematics
A-find the slope of the line
B- how much money is added to the phone bill if you talk an extra 5 minutes ?
C-how many minutes sis you talk if the phone call costs $3?
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Ответ:
(2)/(3) =( 4)/( 3+x)
Cross multiply
2*(3+x)= 4*3
Solve bracket
6+2x=12
Subtract 6 from both sides
2x=6
Divide both sides by 2
x=3
Hope it helps :-)