The two triangles are similar // what is the value of x?

I can't really pull out paper rn but the equation is basically:

4x+2 over 3x equals 28/20

you then just cross multiply. 

so x is 10

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?