4. The number of years Karla has been playing basketball is 3 less than 6 times the number of years that James has. In total they have been playing basketball for 18 years. How long has Karla been playing

james : x

karla : y = 6x - 3

total : 18 = 6x - 3 + x

18 = 7x - 3

18 + 3 = 7x

21 = 7x

21 /7 = x

x = 3

karla : 6(3) - 3 = 18 -3

answer is 12 years

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.

125 yards

step-by-step explanation:

i take 75 plus 50.