Answer:
y = -7x + 17
Step-by-step explanation:
you want to isolate the 'y' variable, start by distributing -7 on the right side
y + 4 = -7x + 21
now subtract 4 from each side
y = -7x + 17
Okay, what do we know?
1*6=6, right?
Well, then 9*6=? (you should know your math facts by now)
Answer:
x=10 (22.5x+6.50=250)
Step-by-step explanation: