Subtract using a number line. 1.6−1.9

Plot the minuend and the difference on the number line.

Asalesperson earns $320 per week plus 8% of her weekly sales. the expression representing her earnings is 320 + 0.08x. which of the following describes the sales necessary for the salesperson to earn at least $1000 in the one week?

What is the binomial expansion of (2x-3)^5

Anyone know? will mark brainliest if correct