John entered to short one futures contact on S&P 500 index. The futures price was 1000 when he entered his position, and he put down 20% as the initial margin. What’s his return if the level of S&P 500 index becomes 1200 at maturity date? The multiplier of the futures contract is $250.

What are the three best ways to reduce helminth infections?

The spot price of the British pound is currently $1.60. If the risk-free interest rate is 4% in the United States and 8% in the United Kingdom, what should the futures price of the pound be for delivery 6 months from now?

Alexander wants to donate $37,500 per year toward a cause into perpetuity out of the returns on his investments. If he assumes that his investments will earn at least 8% per year on average, how much capital will he need?

What does an inverted yield curve indicate for an investor?

Which cells phagocytose bacteria?

Suppose you are infected with a hookworm. Which of the immune responses in the list will best help you clear this pathogen from your system? (Select all that apply.)

The process in which a strand of messenger RNA is used to build a protein is called

What would the rate of childhood mortality be without vaccines?

Of the top 5 causes of child mortality worldwide, which are directly caused by pathogens? (Select all that apply.)