Answer:
(-2,7/2)
Step-by-step explanation:
340
$730 - $50 = $680
$680 / 2 = 340
they both have an equal of 340 and then mike adds in 50 more so:
340 + 340 = 680 + mike's $50 = $730.
25
z+3z+25=125
4z=100
z=25
