Marcus and tony work for lombardo's pipe and concrete. mr. lombardo is preparing an estimate for a customer. he knows that marcus lays a slab of concrete in 7 hours. tony lays the same size slab in 3 hours. if both work on the job and the cost of labor is $ 50.00 per hour, decide what the labor estimate should be.

step-by-step explanation:

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,

1. perpendicular

2. parallel

3. perpendicular

step-by-step explanation:

well if you round, things become much more simple. round 5.95 to 6, 4.25 to 4, and 1.05 to 1. now, add 6+4+1 and that would equal 11. so the items together would equal to about $11.