Fidel has a rare coin worth $550. Each decade, the coin's value increases by 10%.
Which expression gives the coin's value, 6 decades from now?

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest

With number 11 ( show how you got the answer)

What makes a trapezoid an isosceles trapezoid?