1) When I double my number and add 3, I get 13. WRITE AN EQUATION that represents the hint. 2) When I double my number and add 1, I get my number plus 4. WRITE AN EQUATION that represents the hint.

3) When I subtract five from my number, I get my number multiplied by 0.5. WRITE AN EQUATION that represents the hint.

4) When I triple my number and add 4, I get 4 times my number minus 3. WRITE AN EQUATION that represents the hint.

***please answer quickly!!!

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?