Natalie and Jonathan are asked to write an expression equivalent to 2(2x +2y). Natalie writes the expression 4x + 4y.
Jonathan writes the expression 8xy.
Who is correct and why?

Tanya has $42 to spend at the dolphin island store. tshirts sell for $7 each and a pair of sunglases sells for $6.tanya buys 3 tshirts. how many pairs of sunglases can she buys with the amount of money she has left

Ebuka's monthly rent is $750. if ebuka pays the rent late, his landlord charges 4% interest per week that the payment is late. write a function that gives the total cost r(t), in dollars, of ebuka's rent if he pays it t weeks late.

How do you solve questions 29 and 31?