Points (-21, 5) and (-7,y) have a slope of 5. Find the y coordinate of the point.

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

Peter measures the angles in a triangle. he finds that the angles are 95, 10 and 75. is he correct? explain your answer

Which shaded region is the solution to the system of inequalities? y y[tex]\geq[/tex]-x+1