There is a flu outbreak at your school that starts with 10 people. The number of ill students increases by 20% each hour. Write an exponential function to represent the total number of ill
students, f(x), where x is the number of hours after the outbreak.
a. f(x) = 10(1.2)x
b. f(x) - 1.2(10)
c. f(x) = 10(20)
d. None of the above.

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan for ?

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?