-3.1+7-7.4x=1.5x-6(x-3/2)

x = -51/29 = -1,75862

Step-by-step explanation:

3,9 - 7,4x = 1,5x - 6x + 9

3,9 - 7,4x = -4,5x + 9

-7,4x + 4,5x = 9 - 3,9

-2,9x = 5,1

x = -51/29 = -1,75862

last one.

step-by-step explanation:

last one.

generally speaking, the others follow some sort of pattern that correlates to either linear (looks like a straight line) or sinusoidal (looks like an s).

the last one is just a random cloud of points that doesn't correlate to any particular known order.

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.