Simplify: 10x - 3(2x + 5) a) 4x - 15 b) 4x - 5 -36x + 15 c) 7x - 7

Twenty-five percent of the customers entering a grocery store between 5 p.m. and 7 p.m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

Issof claims that the scale factor is 1/2. which statement about his claim is correct