#### Answer

Sahara = 7x (square miles)

#### Work Step by Step

The area of the Sahara Desert in Africa is 7 times the area of the Gobi Desert in Asia. If the area of the Gobi Desert is x square miles, express
the area of the Sahara Desert as an algebraic expression in x.
Gobi = x
Sahara = Gobi $\times$ 7 = x $\times$ 7 = 7x