The science club plans to purchase "x" pizzas to feed the students at the science fair. Each pizza contains ten slices and each student at the science fair gets one slice. Write an algebraic expression for the total number of students that the science club can feed pizza.

.mp4 files, because, video

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.

x= cost per bracelet

number of bracelets * x + shipping charge = total cost

so

9x+9=72