You have a container with balls numbered between 1 and 20, if you randomly draw a ball from the container, what is the probability that the number on the ball will be divisible by 4 or will have a value three through 9?

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?

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?