It takes about 20 minutes to grade a students paper. how long in hours does it take to grade papers for a class of 25 students

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

In what organelle does photosynthesis take place?

Simplify 24÷(-2)(3)+7 a. -29 b. 3 c. 11