Answer:
1800 is the original cost
Step-by-step explanation:
cost + 11% cost = 1998
Factor out the cost
cost *( 1+11%) = 1998
cost ( 1.11) = 1998
Divide each side by 1.11
cost = 1998/1.11
cost =1800
You just multiply the numerator and denominator of the fraction by the same number.
2/18
3/27
4/36
5/45
6/54
I hope that helps. :)
$400 - $20 = $380 ( The original charge subtract the amount he paid. )
$380 + $18 = $398 (The amount unpaid plus another charge equal total amount unpaid.)
$398 x 0.02 = $7.96 (The amount unpaid multiply the percentage of interest = amount of interest.)
Phillip charged $7.96 interest on his second bill.
Notice, is a vertical line, when x = 2, y = 3, when x = 1,000,000,000 y = 3 when x = whatever, y = 3
thus, check the picture below
