25% of what is 13? And how do you show your work?

Tracy solved the following problem. which of the statements is true? 9 ÷ 3 + 6 × 2 3 + 6 × 2 9 × 2 18 her answer is correct. her answer is incorrect. she should have multiplied before dividing. her answer is incorrect. she should have multiplied before adding. her answer is incorrect. she should have added before dividing.

Ab and bc are tangent to circle d. find x is ab = 3x + 8 and bc = 26. find x

What is the equation of the parabola with focus (-1,-1) and directrix y=1?