Math help please!!!

Part A) write an expression that represents the following expression using the variable b. "Billy's age in 8 years."

Part B.) write and equation using the expression above if in 8 years billy will be 21 years old.

Part C.) How old is Billy now?

Part D.) write and solve a word problem that matches the equation A- 6=10

Question

Elli4aletessi Elli4aletessi

10-03-2017
Mathematics

Answered

Math help please!!!

Part A) write an expression that represents the following expression using the variable b. "Billy's age in 8 years."

Part B.) write and equation using the expression above if in 8 years billy will be 21 years old.

Part C.) How old is Billy now?

Part D.) write and solve a word problem that matches the equation A- 6=10

Verified Answer :

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danceronfire danceronfire · Answer 1 · 2017-03-13T00:31:14-04:00

If b is Billy's age now, part A would look something like this:

b + 8

Usually, it looks a little more like x = b + 8, just because we like setting the equation to an unknown variable (usually x).

b + 8 = 21

To simplify the above equation, subtract 8 from both sides:

b = 21 - 8
OR
b = 13

We just found the answer to part C above.

I'm not going to work out part D for you (you got this), but use the subtraction sign to your benefit and replace it with a word like "ago", if you're choosing age as your word problem. You could also do the traditional candy word problem where you once had 10 jellybeans and now you have 6.... Up to you. "A" will be your "now" in that case. Have fun!