If f(x) and f-1(x) are inverse functions of each other and f(x)=2x+5 what is f-1(8)?? NEED ASAP

1. -1
2. 3/2
3. 41/8
4. 23

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits

Miranda is braiding her hair.then she will attach beads to the braid.she wants 1_3 of the beads to be red.if the greatest number of beads that will fit on the braid is 12,what other fractions could represent the part of the beads that are red?

Organic apples are on special for $1.50 per pound. does total cost vary inversely or directly with the number of pounds purchased? find the cost of 3.4 pounds of apples. a. inversely: $5.10 b. directly; $5.10 c. inversely: $2.27 d. directly; $2.27