What's (7+3)²+2 i need to know for my son

Imade a beaded necklace that was 2/6 blue, 3/5 green and the rest were white. did the necklace have more blue or green how many white beads did it have.

Points j and k plotted on the coordinate grid are two vertices of rectangle jklm rectangle jklm has an area of 7 square units point j is located at 2,1 and point k is located at -5,1 each vertex of the rectangle is located at a point that has integer coordinates. what is the perimeter of rectangle jklm? (need answer asap)

Eli won $200 in a spelling contest. his mother opened a savings account for him so he could save for a laptop computer. if the bank offers a simple annual interest rate of 4%, how much interest will eli earn over 3 years?