Find the y-intercept of the line on the graph

In the diagram below? p is circumscribed about quadrilateral abcd. what is the value of x

Which expression shows the sum of the polynomials with like terms grouped together

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of