Write a function that asks the user to enter a number (i) between 1 - 1000, then calculate the sum of all numbers from 1 to (i).

In Python

def sum(num):

      total = 0

      for i in range(1,num+1):

             total = total + i

      print(total)

i = int(input("User input [1 - 1000]: "))

if i >= 1 and i <= 1000:

      sum(i)

else:

      print("Invalid User Input")

Step-by-step explanation:

The function is declared here

def sum(num):

The sum is initialized to 0

      total = 0

The following iteration calculates sum from 1 to the user input

      for i in range(1,num+1):

             total = total + i

The total is then printed

      print(total)

The main begins here

This line prompts user for input

i = int(input("User input [1 - 1000]: "))

The following if condition ensures that user input is between 1 and 1000

if i >= 1 and i <= 1000:

      sum(i)

else:

      print("Invalid User Input")

1/5x+9 2/5y+7

step-by-step explanation:

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!