Step-by-step explanation:
perimeter=4×6-1/4 ×2π×3=24-1/2×3.14×3=24-4.71=19.29cm
2.4 hours
You can get this by setting up the equation:
x/4 + x/6 = 1
Where x is equal to the amount of hours spent working. In this equation x/4 would be Doug. In 4 hours he would paint on room. x/6 would be Elaine. When you add them together using common denominators, you can find x.
Then the price of hot dog buns would go up, I assume.
If you were the owner of the leading hot dog bun company, and hot dog prices went down, then more people would need to buy hot dog buns. So if you wanted to profit from that you'd raise your prices a little bit to make more money.
For this quadratic, its vertex form

is

.
To find the value of a, plug in (0,5) and solve.

The final equation in vertex form is

.
In standard form

, the function is

.
Hello,
just plug in the values to the equation:
f(6) = 4(6) = 24
f(8) = 8+11 = 19
hope this helped :)