In an arithmetic progression of 21 terms, the sum of the first 2 terms is −26 and that of the middle 3 is 75. Find the first term and the common difference. Hence, determine the total sum of the arithmetic progression.

Can someone me do math because i am having a breakdown rn because i don’t get it

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

Fill in the table with whole numbers to make 430 in five different ways