Suppose the linear cost function c(x) = 6x gives the cost for buying x items. if the items are sold in packages of 10, and no one can buy more than 5 packages, then the range of the function c is

D {0,60,120,180,240,300}

Step-by-step explanation: They come in packages of 10 and you can get 5.

6x10=60

6x20=120

6x30=180

6x40=240

6x50=300

because they could drop even lower..

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this