Answer:
uhhh maybe c, i thinkkk
Step-by-step explanation:
Answer:
y = 25 (for x less than/equal to 12)
y = 25 + 1.25(x - 12) for x > 12
For x = 20
y = 25 + 1.25(20 - 12)
y = 25 + 10
y = $35
12• (0.25) • (-8) ÷ 1/3 • 5
3• (8) ÷ 1/3 • 5
24 • 1/3 • 5
8 • 5
40
Until the second step is ok.
in the third step, she multiplied the 1/3 term instead if dividing it
24 ÷ 1/3 . 5
24 ÷ 5/3
72/5
Answer:
true
Step-by-step explanation:
its bellow the 0 so its true halfway point to -1
-7 would be about -0.7
Answer:

Step-by-step explanation:
For the surface area we need to add up all the areas in the pyramid:
- area of the triangle sides (there are 4 triangles)
Area of the base:
the base is a square, and the area of a square is given by:

where
is the length of the side:
, thus:

Area of the triangles:
one triangle has the area given by the formula:

where
is the base of the triangle: 
and
is the height of the triangle:
, thus we have the following:

the expression that represents the surface area of the pyramid is:

substituting our values:

which is option B