A)40% 0f 140 = (4/10)*140=56
b) dicount=12.5% 0f 240 = (12.5/100)*240=30
so, u pay (240-30)= 210
7 is a base, 4 is an exponent.
First distribute -2 to both x and -5
-2(x) = -2x
-2(-5) = 10
2x + 10 = -2x + 10
False. 2x + 10 ≠ -2x + 10
False is your answer
hope this helps