5. For questions 5a-5d, choose Yes or No to tell whether the expressions are equivalent. O Yes O No 5a. 6a + 12 and 3(3a + 4) O Yes O No 5b. 3(5b – 2) and 86-5 O Yes No 5c. 5(50 + 6) and 25 + 30C O Yes O No 5d. 20d – 16 and 4(5d - 4)

26

step-by-step explanation:

correct answer:

b.(19,-2)

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or  

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!