Answer:
$120
Step-by-step explanation:
The computation of the cost is shown below:
= Cost per month flat for 1,000 units + extra cost if exceeded 1,000 minutes
where,
Cost per month flat for 1,000 units = $50
And, the extra cost is
= $0.35 × 200 minutes
= $70
So, the total cost is
= $50 + $70
= $120
The 200 minutes is come from
= 1,200 minutes - 1,000 minutes