Marta's jump rope is 10 inches shorter than four times the length of Dilbert's rope. If both their ropes laid together end to end measure 120 inches long, how long is Marta's jump rope?

answer: can you give the

step-by-step explanation:

where is the option given

an = 22 + (n-1) *6

110 seats

step-by-step explanation:

an=a1+(n-1)(d)

a1 = 22   this is the first item in the sequence

d =6   this is how the sequence goes up

a)   an = 22 + (n-1) *6

b) a12 = 22 + (12-1) *6

    a12 = 22+11*6

  a12 = 22 +88

  a12 = 110