Use the graph of f(t) = 2t + 4 on the interval [-4, 6] to write the function f(x), where f(x)=the integral from x to 2 of f(t)dt
a f(x) = x2 + 6x
b f(x) = x2 + 4x - 12
c f(x) = x2 + 4x - 8
d f(x) = x2 + 8x - 20

You’re ordering more thread for blue jeans co. you usually purchase from ted’s threads, which sells 12 thread spools for $27. you recently received a notice from wade's wares that says you can buy thread from them for $2.30 each for the first 2 dozen and $2 a spool thereafter. you need to order 5 dozen spools. what percentage can you save by going with wade’s wares?