Hence, the equation for the question (7) is
and equation for (8) is
. It can be solved by linear equation in one variable.
What is a linear equation in one variable?
A linear equation in one variable is written as
. Here,
and
are constants and
is a variable.
(7)
Consider n number of baseball cards does Mike have. Since this is 19 less then the cards Allan have hence, as you add 19 in n then it will give 84.
(8)
Consider the speed of Michelle is n. As, it is 3 times less than the speed of the Jamie hence, it you multiply 3 with n then it will give 12.

Hence, the equation for the question (7) is
and equation for (8) is
.
Learn more about linear equation in one variable from the following link:
brainly.com/question/85774
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Answer:
(C)221.5 miles
Step-by-step explanation:
Given a triangle with two sides a and b and an included(an angle between the two given sides) angle 
Area of the Triangle 

Therefore, The area of the portion that will not be farmed

The correct option is C.
Firstly, divide 30 by 1425
Then, 1425/30 = 47.5
A Mixed number = A whole number + fraction
Your final answer = 47 1/2 trains
Hope this helps <3 Good luck with future exams!
P.S Fun Fact~~ The Mona Lisa has no eyebrows!
B because 14-5=9 and 9-8= 1
The next multiples of 1/5 are 2/5,3/5,4/5,5/5=1