The price of an item has been reduced by 20%.The original price was $77.

$15.40

Step-by-step explanation:

1. Convert Percent to decimal

2. 20% divided by 100 = 0.2

3. X=7 divided by 0.2

X = 35

20\100 multiplied by 100=15.4

15.4 - 77=61.6

Step-by-step explanation:

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb

3/5

step-by-step explanation:

double number line is not a standard concept, so it must have been defined in your textbook. assume top line is numerator.