Answer:
420 x .1 = 42
420 + 42 = 462
400 x .2 = 80
400 + 80 = 480
The first one is cheaper
<em>y = - </em><em> x </em>
Step-by-step explanation:
1). = +
= +
⊥ if = -
2). ( , )
y - = m( x - )
~~~~~~~~~~~~~~~~~~
y = x + 7
=
= -
( 3, - 4 )
y - ( - 4) = - ( x - 3 )
y + 4 = - x + 4
1/20
only a single number can be chosen out of 20. And 1/20 is the most simplified it can get.
ANSWER: +5
EXPLANATION:
(-5) + (-5) + (-5) = (-15)
+20 + (-15) = +5