Write and solve an equation to determine the base of a parallelogram whose area is 105 meters^2 and whose height is 7 meters. Choices
A: b = 30 meters
B: b = 15 meters
C: b = 735 meters
D: b = 91 meters

(Please help me...)

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14