So,
5y*3 is the open phrase the student uses to model "the sum of 5y and 3".
"The sum of" means addition. The student put 5y*3, while the sum of 5y and 3 is actually 5y + 3.
Answer:
- π = S/2πrh
- v = √2E/m
- b = (-7a+c)/2
- x =3y-1
Step-by-step explanation:
1.

2.

3.

4.

For angle A, you need to do 180-130 which is 50
for angle B, you need to do 180- 90 - 50 which is 40
for angle C, you need to do 180 - 60 - 40 which is 80
If you want me to explain you with further details with how exactly I got those answers and how I knew what to do, then ask me.
I think it would be 23 bags without any cookies left over