Agrocer sells 30 loaves of bread a day. the cost is $2.50 per loaf. the grocer estimates that for each $0.50 increase in cost, 2 fewer loaves of bread will be sold per day. let x represent the number of $0.50 increases in the cost of a loaf of bread. for what number of $0.50 increases in the cost of a loaf of bread will the grocer's generated revenue be greater than zero? a. the grocer's generated revenue will be greater than zero for any number of $0.50 increases greater than 20. b. the grocer's generated revenue will be greater than zero for any number of $0.50 increases less than 20. c. the grocer's generated revenue will be greater than zero for any number of $0.50 increases greater than 15 . d. the grocer's generated revenue will be greater than zero for any number of $0.50 increases less than 15.

none of the above

Step-by-step explanation:

The grocer's revenue will be the product of the number of loaves sold (30-2x) and their price (2.50+0.50x).

Revenue will be positive for values of x between those that make these factors be zero. The number of loaves sold will be zero when ...

... 30 -2x = 0

... 15 -x = 0 . . . . . divide by 2

... x = 15 . . . . . . . add x

The price of each loaf will be zero when ...

... 2.50 +0.50x = 0

... 5 + x = 0 . . . . . . . multiply by 2

... x = -5 . . . . . . . . . . subtract 5

Revenue will be positive for any number of increases greater than -5 and less than 15.

_____

D is the best of the offered choices, but it is incorrect in detail. -5 is a number less than 15, but will give zero revenue.

d. it is a convex pentagon because it has five sides and none of the sides would extend into the inside of the polygon.

step-by-step explanation: