5 hours 380 cookies
--------- = -----------------
5 5
380/5 = 76 cookies made each hour
When both increase, the slope is positive (+)/(+)=(+)
You have the following equation:

In order to solve the previous equation for y, proceed as follow:
3 + y/2 = -212 subtract 3 both sides
y/2 = -212 - 3 simplify right side
y/2 = -215 multiply by 2 both sides to cancel the denominator left side
y = -215(2)
y = -430
Hence, the solution for y in the given equation is y = -430
Answer:
t = 1
Step-by-step explanation:
16 - 2t = 5t + 9
7 = 7t
t = 1