Yikes. I believe it would be 186•10^3
If not, my apologies. I haven't done it in quite a while
Answer:
A = 5x² + 6x + 1
Step-by-step explanation:
The area (A) of a trapezoid is calculated as
A =
h (a + b)
where h is the height and a, b the parallel bases, thus
A =
(x + 1)(6x - 5 + 4x + 7)
=
(10x + 2)(x + 1)
= (5x + 1)(x + 1) ← distribute using FOIL
= 5x² + 6x + 1
208 4/7 +201 3/4 =
1456 / 7 + 804/4 = 409
-------------------------------------------------------
20 1/6 - 15 3/5 =
121 / 6 - 78/5 = 137 /30
.429 I think is the correct answer, I'm not 100% cure though.