Stanley ordered 2 pizzas cut into eighths. if he ate 5/8 of a pizza, how much was left?

 The required quantity of pizza that was left is

Step-by-step explanation:  Given that Stanley ordered 2 pizzas cut into eighths and the ate of a pizza.

We are to find the quantity of the pizza that was left.

According to the given information, we have

number of pizzas, n = 2

and

the fraction of the pizza ate by Stanley is

Therefore, the quantity of pizza that was left is given by

Thus, the required quantity of pizza that was left is

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