Answer the 3 questions in the pictures below

Which expression is equivalent to -5(3x - 6/7)

At your job you're paid $50 per week plus $3 per sale at least how many saled do you need to make in order to have over $250

Julie multiplies 6.27 by 7 and claims the product is 438.9 .explain without multiplying how you know juliesanswer is not correct.find the correct answer