Answer:
Algebraic expression ; 3x = 39
Step-by-step explanation:
Let the unknown number be x

Further solving

Answer:
35
Step-by-step explanation:
For this question do 27 squared which is 729 + 22 squared which is 484 then add them to get 1213 then square root 1213 to get 34.8281495345 which rounded to the nearest inch would be 35
Im not an expert or anything, but i think for the innequality, i would say

as far as the amount of people she can invite, do 500-100=400 because of the setup fee, then, to find how many people she can invite. 400÷6.50 which leaves you with the highest amount of people she can invite without going over budget, as 61.
Emily rented the bike for five hours.