The work that Yi did to find the greatest common factor of 42 and 63 is shown below. Factors of 42: 1, 2, 3, 6, 7, 14, 21, 42
Factors of 63: 1, 7, 9, 63

The greatest common factor is 7.

What is Yi’s error?
Yi did not list all the factors of 63.
Yi listed multiples for each number instead of factors.
Yi did not list all the factors of 42.
Yi found the least common multiple.

Because of your favorite lemonade it is $3.84 for 3 gallons. write this as an unit rate

To find the extreme values of a function f(x. y) on a curve x-x(t), y y(t), treat f as a function of the single variable t and use the chain rule to find where df/dt is zero. in any other single-variable case, the extreme values of f are then found among the values at the critical points (points where df/dt is zero or fails to exist), and endpoints of the parameter domain. find the absolute maximum and minimum values of the following function on the given curves. use the parametric equations x=2cos t, y 2 sin t functions: curves: i) the semicircle x4,y20 i) the quarter circle x2+y-4, x20, y20 b, g(x, y)=xy

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2