Write and solve the equation, and then check your answer. The sum of two and two tenths and a number is five.

Which statements are correct? Check all that apply.

A.The word “sum” means the result of adding two numbers.
B.The correct equation is n – 2.2 = 5.
C.The correct equation is n + 2.2 = 5.
D. The solution of the equation is n = 7.2.
E.The solution of the equation is n = 2.8.
F.Check the solution by substituting the value for n and simplifying.

A, C, E, F

Step-by-step explanation:

I took the assignment

Part a: area of a rectangle is length x width
                (4x + 5)(3x + 10)
                use foil to multiply the equation.
                first outer inner last
     
first, multiply 4x x 3x = 12x^2
outer, multiply 4x x 10 = 40x
inner, multiply 5 x 3x = 15x
last, 5 x 10 = 50

12x^2 + 40x + 15x + 50
12x^2 + 55x + 50

part b: the degree is 2, because 12x^2 has an exponent of 2.

part c: the product of 2 polynomials, is a polynomial.