What equation can you use to make 10,4,3,2,1 to equal 40

Select the correct answer. joshua likes to read. he read 6 books when he was 6 years old. every year he doubled the number of books he read the previous year. how many total books did he read between the ages of 6 and 10? a. 60 b. 90 c.186 d.187

If a || b and e || f , what if the value of y ?

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.