Last week andrew bought 3 lbs. of zucchini and 2 lbs. of tomatoes for $7.05 at a farm stand. this week he bought 4 lbs. of zucchini and 3 lbs. of tomatoes, at the same prices, for $9.83. what is the cost of 1 pound zucchini and 1 pound of tomatoes at the farm stand?

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

395.84

step-by-step explanation:

2πrh+2πr²

2 (pie)(radius)(height)+2(pie)(radius)^2