Simplify: −3(4x + 5)(2x + 4)
a) 8x2 + 26x + 20
b) −24x2 + 78x + 60
c) −8x2 − 26x − 20
d) −24x2 − 78x − 60

The weight of an object in a particular scale is 175.2 lbs. the measured weight may vary from the actual weight by at most 0.1 lbs. what is the range of actual weights of the object

This question awards 100 ! i really don’t want to fail i will also mark you !

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.