Please help me , will mark brainliest

1. what is the measure of ∠abc? what is the measure of ∠abd?

Solve the problem. a student earned grades of c, a, b, and a in four different courses. those courses had these corresponding numbers of credit hours: 4, 5, 1, and 5. the grading system assigns quality points to letter grades as follows: a = 4, b = 3, c = 2, d = 1, and f = 0. compute the grade point average (gpa) and round the result to two decimal places. 3.40 3.50 8.75 2.18

Kira looked through online census information to determine the overage number of people living in the homes in her city what is true about kira's data collection?