Bill wants to take 12 lb of chocolate on a trip. if he already has chocolate bars weighing 3 lb 10 oz, and 1 lb 3 oz., how much more does he need to take?

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Could someone with number 1 and 2

Square a has a side length of (2x-7) and square b has a side length of (-4x+18). how much bigger is the perimeter of square b than square a?and show all work! you so