1. Sewing patterns recommend buying extra fabric in case of mistakes. Jessica bought 5 yards of fabric, plus 25% extra fabric. Derek bought 7
yards of fabric, plus 30% extra. Who bought more fabric? How much
more?

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Is it true that product of 3 consecutive natural numbers is always divisible by 6? justifyyour answer

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