After four rounds, 74 teams are eliminated from a robotics competition. There are 18 teams remaining, Write and solve an equation to find the number of teams t that
started the competition
An equation that represents this situation is?

If sin(x) = 0 and cos(x) = 1, what is tan(x)?

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?

Pls the last one and it has to be like number 6