The cup was filled at a constant rate. It started empty. After 2 seconds, it held 70 cm^3 of water.
Find the percent of the cup that is filled with water after 3 seconds.

Given the expression (7 ? 4i) ? (2 + 6i), perform the indicated operation and write the answer in the form a + bi.

Sophia wrote an equation to represent the revenue of a movie theater for one day. she let x represent the number of child tickets sold and y represents the nunver of adult tickets sold. if a child ticket cost $4, an adult ticket cost $6, and the total revenue for the daybwas $420, which equation could sophia use to represent the number of chikd and adult tickets that were sold?

Write as a product of two polynomials. 2(3–b)+5(b–3)^2