19 Which of the following is equivalent to 2(12-6n+9)- Z(n? - En+9)? =1 19 Ο Σ(n- 32 =10 19 Ο Σ(n-32 19 Ο Σ(n+ 3)? =10 19 Ο Σ(n+ 3)? EDGE ASAP​

Asequence is defined recursively by the formula  f(n  +  1)  =  f(n)  +  3 . the first term of the sequence is  –4. what is the next term in the sequence? –7–117

If f(x) = 2x - 6 and g(x) = 3x + 9, find (f - g)(x). a. (f-g)(x) = x + 15 o o b. (f- g)(x) = -x - 15 o c. (f- g)(x) = 5x + 3 o d. (f- g)(x) = -x+3 submit

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.