Dexter wrote the expression n × n × n × n, and ellie wrote an equivalent expression in terms of n. what is the value of ellie’s expression when n = 5?
a) 20
b) 125
c) 625
d) unable to determine the value of ellie's expression without knowing the expression.

Which ordered pair (c, d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

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?