83 hope it helps get a good grade
Answer:
45
Step-by-step explanation:
Since this is only three terms
Find the three terms and add
j=1 3(1)^2+1 = 3+1 =4
j=2 3(2)^2+1 = 3(4)+1 =13
j=3 3(9)^2+1 = 27+1 =28
The sum is 4+13+28 =45
The picture will now be 7.5 inches high by 18 inches wide.
To solve:
(x-10)(x-10)
Answer: x^2-20x+100