Question

Please help! Will give medal and fan! Please.
1. Simplify the following expression and justify each step in your simplification. 5(7-x)+6x(3x+4)

2. A laptop advertisement states that internal parts operate at 55 degrees Celsius plus or minus 15 degrees. Write an absolute value equation to represent the situation. Then solve the equation and write it as a compound inequality. State the meaning of the solution.

3. Write an equation of a line that goes through point (4, -5) and is parallel to line y= 2x+8. Show all work.

Answer 1

4. Evaluate the expression for the given value of the variable.
|-4b-8| + |-1-b^2| + 2b^3; b=-2

5. Write the expression in simplest form.
3(a^2+b) - 4(a^2-b)

6. Solve the equation. Check for extraneous solutions.
9|9-8x| = 2x+3

Please show work on all questions.

Answer 2

hmmm one suggestion here :)) post one question at a time. haha
but I will go ahead and solve #1 for ya :)
1. Simplify the following expression and justify each step in your simplification. 5(7-x)+6x(3x+4)

so that will be
35-5x+18x^2+24x
when u distribute.
now combine like terms.
18x^2+19x+35
would be your final answer if you are just simplifying.

Answer 3

Thank you! Is that all the steps? That's it?

Answer 4

@Melodysim

Answer 5

Could you be amazing and help me with any of the others? :) @Melodysim

Answer 6

yes and I can work #3 and #5 out for you. I was called in other question sorry

Answer 7

kk #3
3. Write an equation of a line that goes through point (4, -5) and is parallel to line y= 2x+8. Show all work.

so. parallel slopes are equal; 2
therefore, if you plug it in it will be -5=2(4)+b
than you solve it for b.
-5=8+b
-13=b
noww plug it back in to y=mx+b
it will be
-5=2x-13

Answer 8

oops I meant y=2x-13

Answer 9

Ok, so instead of -5=2x-13 its y=

Answer 10

yes :))

Answer 11

okay than #5
3(a^2+b) - 4(a^2-b)
distribute!!
3a^2+3b-4a^2+4b
now you combine like terms
-a^2+7b
this would be your simplest form!!

Answer 12

Thank you sooooooo much! You're a lifesaver. Really :) Now I have 2, 4, and 6. Do you recommend posting separately or together? @Melodysim

Answer 13

separately. because ppl tend to freak out when they see problems all together haha like I kinda did :)) @love_to_love_you

Answer 14

Haha alrighty. Thanks :)

Answer 15

Blah. no problem!