-4y+5x=8
3y-3x=-3 --> divide by (3) y-x=-1
then multiply by (4) 4y-4x=-4
-4y+5x=8
4y-4x=-4
---------------
x=4
then plug x=4 in
4y-4x=-4
4y-4(4)=-4
4y-16=-4
4y=12
y=3
solution: (4;3)
Answer:
PLAN A
$840-$180=$660
In 1 week = $60
how many weeks = $660
<u>$</u><u>6</u><u>6</u><u>0</u><u> </u><u>×</u><u> </u><u>1</u><u> </u><u>week</u>
$60
==== it will take 11weeks..
PLAN B.
In 1 week = $70
how many weeks= $840
<u>$</u><u>8</u><u>4</u><u>0</u><u> </u><u>×</u><u> </u><u>1</u><u> </u><u>week</u>
$70
====It will take 12weeks
PLAN A IS THE CORRECT ANSWER IT ONLY TAKES 11 WEEKS
Answer:
-38
Step-by-step explanation:
-51 + 13(-4h + 57)^2
- Subsitute the value of h into the variable.
-51 + 13 [-4(14) + 57]²
- According to BEDMAS, solve the brackets first.
-51 + 13 (-56 + 57)²
-51 + 13(1)²
-51 + 13(1)
-51 + 13
= -38
28.49/7.5= 3.80 per bottle of gasoline
