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.
Answer:
35
Step-by-step explanation:
M=5J
J=M/5
42=6J
42/6=7
Jullian is 7
7x5=35
Mary is 35
35+7=42
Answer:
option 3
Step-by-step explanation:
Beaded braclets at 9 beads each
Then 156 beads = 156/9
17.333
But the answer is 17 braclets since she cannot make .333 of a braclet
