3 equals 243. Explain how to use that fact to quickly evaluate 36

Evaluate the expression for the given value of the variable 7a - 4a for a =8

Use the spider tool located on page 1 of this activity to draw a 12-pointed star for the new logo. (hint: if the spider rotates 360 degrees -- or 720 degrees or 1080 degrees -- she will be facing in the same direction in which she started. when the spider is done drawing, you want her to be facing in the same direction in which she started. she'll be making 12 rotations, all the same size, so each rotation must be some multiple of 360/12 = 30 degrees.) urgently. been stuck on this problem for around 45 minutes now.! it should be easy if you're smart enough

What are two numbers that add up to -9 and multiply to -10 best answer gets branliest and 100 extra points