The results of a recent World Health Organization (WHO) study stated that a 90% confidence interval on the annual cost of rabies in Asia and Africa was $540 - $626 (in millions). Use these numbers to answer the following questions. Show work and put answer (include units) on line provided.

a. What is the WHO’s point estimate of the annual cost of rabies in Asia and Africa?

b. What is the margin of error?

c. What is the width of the interval?

Hiroki wrote a number that is the opposite of -3. what number did hiroki write? a. ⅓ b. 3 c. 0 d. -3

Martin likes to make flower bouquets that have 3 daffodils and 4 tulips per vase. a daffodil has a mass of d grams, a tulip has a mass of t grams, and the vase has a mass of u grams. the expression 5(3d + 4t + v) describes the mass of 5 bouquets. match each amount in the situation with the expression that represents it. situation expression number of bouquets mass of one bouquet mass of the tulips in one bouquet 4t mass of the daffodils in one bouquet 3d + 4t + v

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0