1 The focal length, F, of a camera's lens is related to the distance of
the object from the lens, J, and the distance to the image area in the
camera, W, by the formula below.
+
1
I
1
W
1
F
When this equation is solved for ) in terms of F and W. J equals
(1) F-W
(3)
FW
W - F
(2)
FW
F-W
1
F
1
W

In what form is the following linear equation written y=9x+2

Simone claims the initial value and y-intercept are the same thing on a graph. is she correct? if you know that a line has a slope of and a y-intercept of 7, what is the equation for that line in slope-intercept form?

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations