What statement makes the open sentence 1.2 = 3x true?
1.) x = 0.4
2.) x = 1.8
3.) x = 2.5
4.) x = 3.6

i am very confused xd
also if you could tell me how you got the answer i would appreciate it : )

Marco is studying a type of mold that grows at a fast rate. he created the function f(x) = 345(1.30)x to model the number of mold spores per week. what does the 1.30 represent? how many mold spores are there after 4 weeks? round your answer to the nearest whole number. 1.30 represents the number of mold spores marco had at the beginning of the study; 985 mold spores 1.30 represents the number of mold spores grown in a given week; 448 mold spores 1.30 represents the 30% rate of weekly growth; 345 mold spores 1.30 represents the 30% rate of weekly growth; 985 mold spores

Write an inequality and solve each problem.for exercises 11 and 12, interpret the solution.

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol