Mike owns an electronics shop. he expects the revenue from the sales of mobile phones to increase by $100 with each unit sold. he targets a maximum revenue of $70,000. thereafter, he expects the revenue, r, to drop by $100 with each unit sold, x. which statements are true for this situation? the equation that models the revenue is r = -100|x − 700| + 70,000. the equation that models the revenue is r = -100|x − 70,000| + 70,000. the equation that models the revenue is r = -|x − 100| + 70,000. revenue will be $50,000 for 500 units and 900 units. revenue will be $50,000 for 900 units and 1,200 units.

The equation that models the revenue is r = -|x -100| + 70,000.

Step-by-step explanation:

The equation that models the revenue is r = -|x − 100| + 70,000

Step-by-step explanation:

Mike owns an electronics shop. He expects the revenue from the sales of mobile phones to increase by $100 with each unit sold. He targets a maximum revenue of $70,000. Thereafter, he expects the revenue, r, to drop by $100 with each unit sold, x.

He targets maximum revenue , so leading coefficient is negative

sales of mobile phones to increase by $100 with each unit sold and then drops by $100 with each unit sold after reaching maximum revenue

So we use absolute function

r= - |x-100|

maximum revenue is 70,000 so we add it at the end

Revenue function becomes

r= - |x-100|+ 70000

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

step-by-step explanation:

the true statements are:

r = set of real numbers

n = set of natural numbers, 1,2,

w = n u{0} = {0,1,}