First, ask yourself: What is a polynomial? It's an algebraic expression in which all powers of x are zero or positive integers.
Eliminate E because -2 is not a positive integer exponent.
Accept D because all of the powers of x are positive integers: {3, 2, 1, 0}
Eliminate C because -3 is not a positive integer power
Eliminate A and B because of the fractional or negative exponents shown.
Only D is a polynomial.
Answer:
188 units cubed
Step-by-step explanation:
You plug in 3 where you see x and 4 where you see y
3*3+1/4*4^2
9+1/4*16
9+4
13
Remember to follow PEMDAS (order of operations)
parenthesis, exponents, multiply, divide, add, subtract<span />
Midpoint of (x1,y1) and (x2,y2) is
((x1+x2)/2,(y1+y2)/2)
just average the x and y values
(5,-8) and (10,18)
((5+10)/2,(-8+18)/2)
(15/2,10/2)
(7.5,5)
the midpoint is (7.5,5)
