Question

question 4: if amy needs to order c meals, what is the least expensive plan?
no plan
basic plan
premium plan
either no plan or basic plan
either basic plan or premium plan
either no plan or premium plan
least expensive plan for c:
eddie is joining the besmart pro service for buying business apps online, which has two payment plans:

• no plan, with a cost of $26 per app
• economy plan, with an enrollment fee of $110 and a cost of $15 per app

question 5: what is the number of apps where the cost of no plan and a economy plan are the same (known as \breakeven point\)?
question 6: if eddie expects to download 7 apps, which plan should he choose?

Explanation:

Step1: Analyze Question 4 graph

At quantity C, the red dashed line (No plan) has the lowest cost on the graph.

Step2: Set up breakeven equation (Q5)

Let $x$ = number of apps. Cost of No plan: $26x$. Cost of Economy plan: $110 + 15x$. Set equal:
$$26x = 110 + 15x$$

Step3: Solve for breakeven x (Q5)

Subtract $15x$ from both sides:
$$26x - 15x = 110$$
$$11x = 110$$
$$x = \frac{110}{11} = 10$$

Step4: Calculate costs for 7 apps (Q6)

No plan cost: $26 \times 7 = 182$
Economy plan cost: $110 + 15 \times 7 = 110 + 105 = 215$
Compare: $182 < 215$, so choose No plan.

Answer:

Question 4: No plan
Question 5: 10
Question 6: No plan