Solve the system by the substitution method. Be sure to check all proposed solutions. x + 2y = 14

6x + 3y = 21

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

Is the power produced directly proportional to the wind speed, give reasons for your answer?

Which function can be used to model the monthly profit for x trinkets produced? f(x) = –4(x – 50)(x – 250) f(x) = (x – 50)(x – 250) f(x) = 28(x + 50)(x + 250) f(x) = (x + 50)(x + 250)