Step-by-step explanation:
B.
if he is just talking about the length than it is,
4(13x + 8)
of he is talking about overall length he swam than,
4(13x + 8) + 3(7x - 2)
c.
if x = 12
than
perimeter = 2l + 2b
so, after inserting the values we got,
→ 2[13(12) + 8] + 2[7(12) - 2]
→ 2 (156 + 8) + 2(84 - 2)
→ 2 × 164 + 2 × 82
→ 328 + 164
→ 492 ft. ← perimeter
and yeah, according to me
a is wrong as,
formula of perimeter = 2l + 2b or 2(l+b)
so, the answer should be,
2(13x + 8) + 2(7x - 2) or 2 [ (13x + 8) + (7x - 2)
<em><u>hope </u></em><em><u>this</u></em><em><u> answer</u></em><em><u> helps</u></em><em><u> you</u></em><em><u> dear</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>take </u></em><em><u>care </u></em><em><u>and </u></em><em><u>may</u></em><em><u> u</u></em><em><u> have</u></em><em><u> a</u></em><em><u> great</u></em><em><u> day</u></em><em><u> ahead</u></em><em><u>!</u></em>
Answer:
P = 5.5x + 9
Step-by-step explanation:
P = 5x + (0.3x + 24) + (0.2x - 15)
reduced
P = 5.5x + 9
The roots of an equation are simply the x-intercepts of the equation.
See below for the proof that 
has at least two real roots
The equation is given as:
There are several ways to show that an equation has real roots, one of these ways is by using graphs.
See attachment for the graph of
Next, we count the x-intercepts of the graph (i.e. the points where the equation crosses the x-axis)
From the attached graph, we can see that crosses the x-axis at approximately <em>-2000 and 2000 </em>between the domain -2500 and 2500
This means that has at least two real roots
Read more about roots of an equation at:
brainly.com/question/12912962
