Substitute x= 3 and calculate
f(3)= 2•9+5• sqrt( 1)
f(3)= 18+5= 23
Answer:

Step-by-step explanation:
Given

Required
Write a definition
First, we derive a formula for the series using:

From the attached data;


So:



Collect like terms


So, the definition for first 7 terms is:

Answer:

Step-by-step explanation:
GIVEN: A car was sold
standard washed in a day , which was
of their total sales for that day.
TO FIND: Total amount of washes that the car wash sold that day.
SOLUTION:
Let the total sales of car washes sold for that day 
total number of standard car washes sold 
As, total standard car washes sold are
of total sales in a day

putting value in equation



Hence the total number of car washes sold that day are 
Answer:
1, 2, 3
Step-by-step explanation: