Em uma loja, um livro custa x reais e um caderno custa y reais. Qual é a expressão algébrica que
representa o fato de Marina comprar 8 livros e 10
cadernos iguais a esses na loja?

Which equation can be simplified to find the inverse of y = 2x2?

Sole with work in 10 years, the average number of hours of tv watched per week by teenagers dropped from 23.9 to 21.4. find the percent of change.

Josh has a rewards card for a movie theater he receives 15 points for becoming a rewards card holder he earns 3.5 points for each visit to the movie theater he needs at least 55 points to earn a free movie ticket which inequality can josh use to determine x, the minimum number of visits he needs to earn his first free movie ticket.