Tehara has read 115 pages of a 305-page book. She reads 10 pages each day. How many days will it take to finish? 10
+
115
p
=
305
10 + 115 p = 305

10
p
+
305
=
115
10 p + 305 = 115

115
+
10
p
=
305
115 + 10 p = 305

115
⋅
10
p
=
305
115 · 10 p = 305

Tehara has read 115 pages of a 305-page book. She reads 10 pages each day. How many days will it take to finish?

10
+
115
p
=
305
10 + 115 p = 305

10
p
+
305
=
115
10 p + 305 = 115

115
+
10
p
=
305
115 + 10 p = 305

115
⋅
10
p
=
305
115 · 10 p = 305

Tehara has read 115 pages of a 305-page book. She reads 10 pages each day. How many days will it take to finish?

19 days

Step-by-step explanation:

115 + 10x = 305

x = 19

It will take her 19 days to finish.

3. parallelogram

step-by-step explanation:

we turn each of our sides into direction vectors

ab=b-a=(3 - 7, 1 - 0) = (-4, 1)

bc=c-b=(1,6)

cd=d-c=(4,-1)

da=a-d=(-1,-6)

we see how the opposite sides have negated direction vectors; this is characteristic of a parallelogram.   we have congruent sides ab=cd and bc=da with unequal lengths because 1^2+6^2 is different from (-4)^2+1^2.   so it's not a square or a rhombus.  

we check the dot product of direction vectors of adjacent sides.   we have

ab dot bc = -4(1) + 1(6) = 2

that's not zero so the sides are not perpendicular.   we've ruled out rectangle.

the direction vectors indicate two pairs of congruent parallel sides, so we choose parallelogram over trapezoid.

i believe the answer is c.