The answer is A. 42
Solution:
Let x= ones digit, y=tens digit
1st condition (original number) : 7(x+y)=10y + x
2nd condition (new number by reversing the digits): 18+x+y=10x+y
simplifying:
1st condition: 6x=3y
2nd condition: x=2
substituting x=2 to 6x=3y
<span>y=4</span>
$270 equals 135% of the original price
270/x=135/100
135*2=270
100*2=200
Final answer: $200
<span>My estimate was 2,808 is that a reasonable estimate and why
312*9
9*2=18>>9*10=90>>9*300=2700
2700+18+90=>>2,808</span>
(3,-1)
Use the V.L.T (Vertical Line Test) and plot the graph points, if you can draw a straight line through any points it cannot be a function.
