9a - 3(a - 6) = -6...distribute thru the parenthesis
9a - 3a + 18 = -6....subtract 18 from both sides
9a - 3a = -6 - 18 ...combine like terms
6a = - 24...divide both sides by 6
a = -24/6
a = - 4
Answer:
14 weeks
Step-by-step explanation:
500 - 220 = 280
280 / 20 = 14
Answer:
The slope is the cost per hour.
$5 per hour