Check solution here.hope it will be of help.
Answer:
476 balloons
Step-by-step explanation:
4 groups x 100 = 400 balloons
7 groups x 10 = 70 balloons
+6 balloons (leftover)
400+70+6= 476 balloons total for her party
F. 30 is the correct answer, for mean you just have to add all the ages together and divide by the number of customers
X-30+x-30+x=180
3x-60=180
3x=240
X=80
-8=2-4y
-10=-4y
y=5/2 or 2 1/2 or 2.5
