Equivalent ratios

x y
6 9
? 12
10 15

what number is missing from the table of equivalent ratios?
a) 4
b) 6
c) 8
d) 9

12x + 1 = 25 solve the following equation. then place the correct number in the box provided.

Each cookie sells for $0.50 sam spent $90 on baking supplies and each cookie cost $0.25 to make how many cookies does sam need to sell before making a profit formula: sales> cost

In the given triangle, ∠aed ∼ ∠ abc, ad = 6.9, ae = 7.2, de = 5.2, and bc = 10.2. find the measure of bd and ce. round your answer to the nearest tenth.