Question

Evaluate 3(2a-4/b^2) for a = 4 and b = 3.
a. 23.6b. 0c. 1 1/3d. 3 4/9 2. What is the value of x in the following equation x+84=-22? ?
a. -106b. -62c. 62d. 1063. What is the value of x in the following equation ?2-x+5a. -2b. -3c. 3d. 7-2-337

Answer 1

1. Put the values where the variables are, then do the arithmetic.
  3(2·4 -4/3²) = 3(8 - 4/9) = 24 - 4/3 = 22 2/3 ≈ 22.7
It looks like the answer key missed this one. (Have your teacher show you how to work it.)

2. Add -84 to the equation.
  x = -106
The appropriate choice is
  a. -106

3. If your equation is 2=x+5, add -5 to get
  -3 = x
Then the appropriate choice s
  b. -3

Answer 2

hey user!!

your answer is here...

plz refer to the attachment↑↑↑

but I think, u mistaken in two places..

first in the options.. I think it's "a.22.6" not 23.6 :)

and next in 3rd question.

u wrote "-" instead of "=" :)

cheers!!