Iam multiple of 13, i have 2 digits and i am odd and also a multiple of 5. who am i?

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

Which expression is rational? 6. , square root two, square root 14, square root 49

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.