Which expressions are equivalent to 4(-5z+2)+(-6)4(−5z+2)+(−6)4, left parenthesis, minus, 5, z, plus, 2, right parenthesis, plus, left parenthesis, minus, 6, right parenthesis ?
choose all answers that apply:
(choice a) a 20z-220z−220, z, minus, 2
(choice b) b 2(-10z+1)2(−10z+1)2, left parenthesis, minus, 10, z, plus, 1, right parenthesis
(choice c) c none of the above

option B

Step-by-step explanation:

The question is as following:

Which expressions are equivalent to 4(-5z+2)+(-6) ?

Choose all answers that apply:

A) 20z - 2

B) 2(-10z+1)

C) None of the above

Solution:

Given the expression ⇒ 4(-5z+2)+(-6)

= 4 * (-5z) + 4* 2 + (-6)

= -20z + 8 - 6

= -20z + 2

Option A ⇒ 20z - 2

Option B ⇒ 2(-10z+1) = -20z + 2

Option C ⇒ None of the above

By comparing the the given expression with the options

The answer is option B

9 sandwiches per hour

step-by-step explanation:

when we have a rate, we want a 1 in the denominator

27/3 = 9

27 sandwiches/ 3 hours = 9 sandwiches/hour