The numbers represent an arithmetic progression.
The difference between terms is d=7.
S=a1+a2+...+an, a1=3 and
an=a1+(n-1)×d=3+17×7=122
S=(a1+an)n/2=(3+122)×18/2=125×9=1125
You need to multiply each term inside the bracket by 8:
8(w-4)
=8w-32
2x ≤ 30
You must isolate x. To do this divide 2 to both sides
2x/2 ≤ 30/2
x ≤ 15
x is less then or equal to 15
Hope this helped!
~Just a girl in love with Shawn Mendes
Y=mx+b
-6=0.5*-6+b
b=-3
y-intercept=(0,-3)
x-intercept=(6,0)
y=mx+b
0=0.5x+(-3)
x=6