Gente como resolver problemas sobre sistemas lineares? me

ajude de alguma forma me dando por exemplo

What is a liquid assets

Kylie has $70 to spend on clothes. she wants to buy a pair of jeans for $ 30 and spend the rest on t-shirts. each t-shirt cost $8. which inequality represents the number of t-shirts she can purchase?

A square has the coordinates (-2, 2), (-4, 2), (-4, 4), and (-2, 4) at its vertices. The transformed square has the coordinates (-6, 6), (-12, 6), (-12, 12), and (-6, 12) at its vertices.

Which of the following numbers is the smallest 0.008 or 1/3 or 0.048 or 0.36 or 1/9

What is the sum of3/4 + 2/9?

What's the sum of - 4 and 14

If a cube has a volume of 64 cubic units how long is its edge?

Which of the following are solutions to the equations below? x^2+x-20=0

What does the 3 represent in 3 (20 15) ?

the beach shop sold 12 skim boards on saturday and 9 on sunday. What is the percent of decrease from saturday to sunday?