9. a design on the surface of a balloon is 5 cm wide when the balloon holds 71 cm of air. how much air does the balloon hold when the design is 10 cm wide? explain the method you use to find the amount of air.

11. a particular type of cell doubles in number every hour. which function can be used to find the number of cells present at the end of h hours if there are initially 4 of these cells? a. n = 4 ()" b. n = 4(2)" c. n = 4 + (2)" din = 4 +"

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*