You join a gym that costs $59 per month. The first three months are free. If you join for 12 months, how much will you pay in all?

$531

Explanation:

If the first three months are free, take off 3 from 12. That leaves you with 9. Since you pay $59 every month, 59 x 9 is 531

convex lenses are thicker at the middle. rays of light that pass through the lens are brought closer together (they converge). a convex lens is a converging lens. when parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.

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