Answers before 8pm pleasee !!

Plzzz i beg u so much asaaaap ! what is the slope of this line? enter your answer in the box.

Fill in the missing exponents in each box and show how you found the answer. (4 points: 2 points for each correct answer with work shown) c. (9^4)^? =9^1 d.(5^? )^3=5^1 *question marks represent the boxes

Find the circumference of a pizza with a diameter of 10 inches round to the nearest tenth