The local gym offers classes in dance and gymnastics. The gym has 10 dance classes for each 15 gymnastics classes. How many gymnastics classes are there for each dance class?

Y=4x^2+x-1 solve using quadratic formula

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol

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?