Answer
a. $0.49x$
b. No, 49% of its original price
Work Step by Step
a. $(x-0.3x)-0.3(x-0.3x)$
Factor out $(x-0.3x)$
$ = (x-0.3x)(1-0.3)$
Factor out $x $ from $ (x-0.3x)$
$ = x(1-0.3)(1-0.3)$
$ = x(1-0.3)^{2}$
$ = x(0.7)^{2}$
$ =(0.49) x$
b. From part (a), sale price of the television is $ (0.49) x$
$ =(49/100 ) x$ where x is the original price
So. the television store is selling at 49% of original price.
