Rectangle QRST is similar to rectangle JKLM. The scale factor of rectangle JKLM to rectangle QRST is . The perimeter of rectangle QRST is 12 units, and the perimeter of rectangle JKLM is units. The area of rectangle QRST is units2, and the area of rectangle JKLM is 128 units2. If proportional dimensional changes are made to a figure, then the perimeter will change by the scale factor, and the area will change by the scale factor

Look at arnold's attempt to solve the equation for b: 3b = 12 b = 3 · 12 b = 36 describe the mistake that arnold made.

Michelle and julie work at a catering company. they need to bake 264 cookies for a birthday party that starts in a little over an hour and a half. each tube of cookie dough claims to make 36 cookies, but michelle eats about 1/5 of every tube and julie makes cookies that are 1.5 times as large as the recommended cookie size.it takes about 8 minutes to bake a container of cookies, but since julie's cookies are larger, they take 12 minutes to bake. a. how many tubes should each girl plan to bake? how long does each girl use the oven? b. explain your solution process what did you make? c. what assumptions did you make?

If f(x) = 2x + 8 and g(x) = x4, what is (gº)?