Simplify the expression 5x[(3.14+4.16)x9+2]

Agrain trader buys the following amounts from three suppliers: 3,200 pounds, 5,100 pounds and 700 pounds. what is the total weight of his purchase?

What is the expression in factored form? 225x^2 - 144 a. 9(5x+4)^2 b. 9(5x-4)^2 c. 9(4x+5)(4x-5) d. 9(5x+4)(5x-4)

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?