Question: I want to know the correct answer please The sum of an arithmetic progression is found from this formula. S = = (a + 1)

I want to know the correct answer please The sum of

I want to know the correct answer please

The sum of an arithmetic progression is found from this formula. S = = (a + 1) S = sum of n terms; n = number of terms; a = the first term; / = the last term a) Solve for the variable "[" 45 b) Compute "I" when S = 150; n = 6; a = 5 45 Question # 8: (2 Marks) (Show at least two steps) Rearrange the formula to solve for the variable Ec. I = Ex - Ec R

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