A plane travels south for 120 km. The plane then travels north for 45 km. If north is taken as the positive direction, what is the displacement of the plane?

a. 75 km
b. –75 km
c. 165 km
d. –165 km

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?

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth

What is the range of the function? f(x)=-2|x+1|? a. all real numbers. b. all real numbers less than or equal to 0. c. all real numbers less than or equal to 1. d. all real numbers greater than or equal to 1