{Please Help!} :( If f(x) and f1(x) are inverse functions of each other and f(x)=2x+5, what is f-1(8)?
A.) -1
B.) 3/4
C.) 41/8
D.) 23

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

Fiona races bmx around a circular dirt course. if the radius of the course is 70 meters, what is the total distance fiona covers in two laps of the race? a. about 30,772 meters b. about 15,386 meters c. about 879.2 meters d. about 439.6 meters e. about 219.8 meters23 points hurry

Daniel expanded the expression as shown below -2(-8x-4y+3/4)=-10x-8y-11/4 what errors did he make? check all that apply