Question

Grace bought a book for $8 and some pencils that cost $.50 each. She spent a total of $18. Write and solve an equation to determine how many pencils she bought. Let p represent the number of pencils she bought.
Brian sold half of his baseball cards. The next day, he bought 10 more. Now he has a total of 50 cards. Write and solve an equation to determine how many baseball cards he had before he sold any. Let b represent the number of baseball cards he had.

Answer 1

18$-8$book=20pencils that were 10$.

and Brian had 80 cards work: 80÷2= 40+10 new cards=50 cards

Answer 2

I MAY NOT BE RIGHT!!

If the notebook is $8 and you spend $18 that means you brought 10 worth of pencils.

50c - 1pencil
$1 - 2 pencils
$1.50 is 3
$2 is 4
$2.50 is 5
$3.00 is 6
$3.50 is 7
$4.00 is 8
$4.50 is 9
$5.00 is 10


Then you have spent $5 on pencils in that and then you double it so you then have 20p for $10 :)) then $10 + 8 is $18 and in the problem you spent $18 x