I'm not sure what grid you're referring to, but in the factorized form this equation is 4(4x^2 + 12xy +9y).
D is the distance from moon to sun, and it's the hypotenuse of a right triangle.
Y is opposit to angle X
Sin (x) = y/d =
D = Y/sin(x)
20/100
= 0.2
0.2 x 20
= 4
4 of the shops are ice cream shops.
204,000 grapefruit.
There are 10 grapefruit in each box and there are 20,400 boxes; you need to multiply the number of grapefruits in each box (10) times the number of boxes (20,400)
10x20,400=204,000
Don't forget the units! In this problem, the units are grapefruit.