During the week, edward spent $90. at the end of the week, he had $45 remaining. how much money did he have at the beginning of the week?

During the week Edward spent $90 (-90 from total amount). He has $45 remaining. Let x be the amount he started with

x - 90 = 45    is your equation.

To solve for x, isolate it. Note the equal sign. What you do to one side, you do to the other. Add 90 to both sides

x - 90 (+90) = 45 (+90)

x = 45 + 90

Simplify

x = 135

$135 is the amount Edward started out with in the beginning of the week.

hope this helps

step-by-step explanation:

median is the value separating the higher half of a data sample, a population or probablity distribution from the lower half.

step-by-step explanation:

say you have 3,8,7,3,1,9,8 order them from lowest to highest

if orderd it would be 1,3,3,7,8,8,9 now you take away from the lowest and the highest until you end up in the middle.

so you would remove the 1 and 9 leaving you with 5 digits remaining

when you've reached the middle that would be your answer so in this case the answer is 7

if there were two numbers left say 7 and 5 you'd and them together so 12 then divide by 2 witch would equal 6 so the answer would be 6

good luck on that project hoped i you at all