Albert simplified the numerical expression. Expression : +13 + 2
(1 +1+2)+(++)
Step 1:
Step 2:
4+
Step 3:
4+
Step 4:
4+
+(1+0)
Step 5:
(4 + 1) + 7
Step 6:
Which property did he use to justify Step 5?
associative
distributive
commutative of addition
commutative of multiplication

Write a numerical expression that satisfies all of the following conditions. 1.)the only number used in the expression is 5 2.)at least one exponent other than 1 is used 3.)when the expression is evaluated, the answer is greater than 40 and less than 50

Add, subtract, multiply, or divide as indicated. list any restrictions for the variable(s) and simplify the answers when possible. 1) x-2 / x+5 + 3x / 2x-1 2) x+6 / x-6 - x^2 / x+6 3) x+9 / x-4 + x+2 / x^2-11x+28 4) x / x^2-64 + 11 / 2x^2+11x-40 5) 5 / x + 11 / x-3 - x-4 / x^2+2x-15

The amount cami raised during last year’s charity walk, $45.50, is 7/10 of the amount she raised this year. which equation represents n, the number of dollars she raised this year?