I dont know how to do standard notation

Find x if f (x) = 2x + 7 and f (x) = - 1. A. - 4. B. - 3. C. 5.

The area of a rectangle is 42 ft ^2 and the length of the rectangle is 5ft more than twice the width. Find the dimensions of the rectangle. Length: Ft Width: Ft

6y - 3y + 3y - 5y = 11

What is 5.27 rounded to the nearest tenth

Is the fraction 3/9 equivalent to the fraction 1/3

Alice, ben and carol shared a sum of monet they received, how much money did ben receive

What is thirty-four and twelve hundredths as a decimal number?

How many times smaller is 6 is than 60

Sarah is making strings of beads in the first string she uses 3 beads and she triples the number of beads in each of the next strings identify the number of beads she uses in 5 string

If yuri has 20 books in each shelve and there are 6 bookshelves how many book are in the bookcase