What expression is equivalent to 4(5x+2y) 4(5x+2y) .

A 9x+6y

B
4(5x)+4(2y)
C
20x+8y
D
20x+2y
E
4(7xy)
I have to select 2

Need on this one asap im almost done with this subject

How many real-number solutions does the equation have? -4x^2 + 10x + 6 = 0 a. no solutions b. two solutions c. infinitely many solutions d. one solution

25) 56(1) = 5b a. identity property of addition b. identity property of multiplication c. commutative property of multiplication d. commutative property of addition