Answer:
The answer is she sold 20 labradorite crytals and 3 galena crystals.
Step-by-step explanation:
First you times 20 x 20 and get 400 and then times 13 x 3 and get 39 and 400 plus 39 equals $439.
D you can turn that into multiple forms
Answer:
Step-by-step explanation:
Let
y=2x-10
Switch x and y,
x=2y-10
x+10=2y
(x/2)+5=y
So
Answer:330
Step-by-step explanation:
15*22=330