One-eighth of a number is -4,200. what is the number?

-33,600
-37,800
-42,000
-42,800

Can someone me my sister? she is in third grade. 50 points and brainlist! ones that are not answered. plz and thx!

In each bouquet of flowers, there are 2 roses and 3 white carnations. complete the table to find how many roses and carnations there are in 2 bouquets of flowers.

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)