Jeremy is looking for two different lawncare companies to weed and mulch his flower beds. greenscape charges $100 for the mulch plus $12 per hr for labor. d& j landscape charges $23 per hr for the job including the mulch. what is the minimum number of hours the job could be for d& j landscape to have the better deal?

Let x represent the number of hours and y represent the total cost

Greenscape equation: y = 12x + 100

D&J Landscape equation: y = 23x

Use substitution to find out how many hours for the cost to be the same.

23x = 12x + 100

11x = 100

x = ≈ 9.1 hours

D&J Landscape is a better deal when the job takes less than 9.1 hours.

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!