Answer:
c. how late it is in the evening is a function of the length of time the shutter needs to stay open.
Answer: Option D
Step-by-step explanation:
The equation of a line in the form of "slope-interception" has the following form:

Where m is the slope of the line and b is the interception of the line with the y axis.
In this case we know that the line has a slope of -2. Then
.
We also know that the line intercepts the axis y at the point (0, 3) therefore we know that:
.
Finally the equation of the line will be:
If we add 2x on both sides of the equation we get:
The answer is the option D
Step-by-step explanation:
there is a right ∆ and a sector
area of right ∆ = .5×6×5 = 15 cm^2
area of sector = angle/360 * π * r^2
= 1/4 * π * 25 = 19.63 cm^2
area of the shape = 34.63 cm^2