Which inequalities are true? check all that apply.
a - 0 < sqrt 8
b - sqrt8 < 3
c - sqrt 8 > sqrt 7
d - sqrt 8 < 2
e - sqrt 8 > 8
f - 1 < sqrt 8

F(x)= 1/x-4, g(x)=4x+1/x a. use composition to prove whether or not the functions are inverses of each other. b. express the domain of the compositions using interval notation.

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year. how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2