The access code for a car’s security system consists of four digits, 0 through 9. once a digit is used, it cannot be repeated. there are choices for the first digit, choices for the second digit, choices for the third digit, and choices for the fourth digit.

What is the common denominator for 3/5+3/4

Brent wants to know what is 5 x 1/2

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?