Final answer:
To determine the value of p when q = 60 for the equation q = 4 + 0.8p, you substitute 60 for q, then subtract 4 from both sides, and finally divide by 0.8 to find that p = 70.
Step-by-step explanation:
The student's question is asking to solve for the value of p in the equation q = 4 + 0.8p given that q = 60.
To find the value of p, we first substitute 60 for q in the equation to get 60 = 4 + 0.8p.
Next, we subtract 4 from both sides of the equation which gives us 56 = 0.8p.
Finally, we divide both sides of the equation by 0.8 to solve for p, resulting in p = 70.