If de=4x-1,ef=9,and df=9x-22, find the variable of x

When you arrive at the lake, your friend realises he hasn’t got any swimming trunks. you need to ride to a sports shop. the sports shop is 8350 metres away. how many metres is it to cycle there and back?

Which word in the sentence below is an interrogative pronoun? who is picking us up from school? whousisfrom

Ellen makes and sells bookmarks. she graphs the number of bookmarks sold compared to the total money earned. why is the rate of change for the function graphed to the left?