1 - Determine quantos múltiplos de 9 há entre 100 e 1 000. 2 - Determine o 20º elemento e a soma dos termos da seguinte progressão aritmética: (2, 7, 12, 17,...).​

Acompany is making new soccer uniforms for a team. the company uses 2.5 yards of fabric for each shirt. the company uses 82.5 yards of fabric to make shirts and shorts for 15 players. the equation and solution below represents the situation. 15(2.5+x)=82.5; x=3 what does the solution, x=3, represent?

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10