Which equation connects the focal length, f

Question

𝑓
, the position of the viewed object, xo
𝑥
𝑜
, and the position of the image, xi
𝑥
𝑖
, for a convex lens?(1 point)
Responses

f=1xi−1xo
𝑓
=
1
𝑥
𝑖
−
1
𝑥
𝑜
f is equal to the fraction with numerator 1 and denominator x sub i minus the fraction with numerator 1 and denominator x sub o

f=1xi+1xo
𝑓
=
1
𝑥
𝑖
+
1
𝑥
𝑜
f is equal to the fraction with numerator 1 and denominator x sub i plus the fraction with numerator 1 and denominator x sub o

1f=1xi−1xo
1
𝑓
=
1
𝑥
𝑖
−
1
𝑥
𝑜
1 over f is equal to the fraction with numerator 1 and denominator x sub i minus the fraction with numerator 1 and denominator x sub o

1f=1xi+1xo

Answer 1

1
𝑓
=
1
𝑥
𝑖
+
1
𝑥
𝑜

1 over f is equal to the fraction with numerator 1 and denominator x sub i plus the fraction with numerator 1 and denominator x sub o