What strategy for finding area and perimeter of a 2 dimensional shape?

Is there a rational number between 1/7 and 1/8

A teacher is buying supplies for her students. She needs 32 folders and one folder costs 11 cents. There is a sale going on where if you buy 3 folders, you get one free. How much will she spend on the folders?

A baker is using a cookie recipe that calls for 2 1/4 cups of flower to yield 36 cookies. How many flour will the baker need to make 90 cookies using the same recipe?

Marcel has a collection of 1,456 French and Canadian coins. He has 2.5 times as many French coins as Canadian coins. How many French coins does Marcel have in his collection?

What is the slope of the line that passes through (-2,5) and (3,9)

82 = 2 (1-8p) step by step

Find the simple interest of $2300 invested at 7.5%for 10years

Kelly shows all the ways to make 49 as tens and ones. What ways does she show

I have done a math equation for school and i forgot if i could leave a inproper fraction as my answer or if its a fraction i can reduce should i or should i not

Is 1,2,3,6,9 and 36 a múltiple of 9?