Asoda machine takes 3 seconds to fill a 15-ounce cup. if t represents the time in seconds, which equation can you use to find how long it takes the machine to fill a 40-ounce cup?

Time taken to fill 40-ounce cup, t = 0.2 x Volume of cup in ounce = 0.2 x 40 = 8 seconds

Step-by-step explanation:

A soda machine takes 3 seconds to fill a 15-ounce cup.

Time taken to fill 15-ounce cup = 3 seconds

Now we need to find equation for t which is the time to fill a 40-ounce cup.

Time taken to fill 40-ounce cup, t = 0.2 x Volume of cup in ounce = 0.2 x 40 = 8 seconds

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