The summation symbol means we use the variable i in the equation from the given range. In this case, we are given with the equation 3 i - 15 and i ranges from 2 to 7. The summation using simply the calculator is equal to -9. The answer to this problem is -9.
1. -2
2. 4
Is the answers to the following questions
58 is 5 tens (5*10) and 8 ones (8*1)
52
Wants 20 charters to replie
