Jessica and Josh are selling Entertainment Books to raise money for the art room at their school. One book sells for $15. Jessica received the prize for selling the most books in the school. Jessica sold 18 times more books than Josh. Together they sold 209 books. How many did each one of them sell?

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x