Answer:
Step-by-step explanation:
If 2 pounds costs $4, then 1 pound costs $2. That's why the equation is y = 2x and x is the number of pounds you buy. If you buy 2.5 pounds, then the cost is y = 2(2.5) so
y = $5
3.5
x = -0.4
(1,2)
The other intervals contain local minimums, local maximums are also known as maximum points and look like upwards parabolas
Doesn't make sense. Please re-punctuate your question.
