Which equation and solution can be used to solve this problem? Thirteen less than a number is sixteen.
13 minus n = 16: Add 13 to both sides. The answer is 29.
n + 13 = 16: Subtract 13 from both sides. The answer is 3.
n + 16 = 13: Subtract 13 from both sides. The answer is 3.
n minus 13 = 16: Add 13 to both sides. The answer is 29.

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. 4x^2 + 20x + 25 = 0

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?

Write the equations in logarithmic form 10^3=1,000