Answer:
2 is a number and "twice a number" means multiply by 2.
Add 3 to isolate y
3.8 + 3.8 = 1.9z - 3.8 + 3.8
7.6 = 1.9z
Divide by 1.9
4 = z
To get the answer, first, you must find the amount in each box, so you must divide, 122 divided by 8, you should get 15.25, but that's not your answer. The question asks how many COMPLETE boxes, so just choose the whole number, which is 15. 15 is the answer.
I remember CUP -- concave up positive. Here we have a leading coefficient that's negative, so the cup is upside down, the parabola opens down, an arch not a bowl.
