I’m also still at finding answer so keep calm and I will give answer
Let
x--------> the time in hours
y-------> the distance in miles
we know that
The speed is equal to
in this problem
<u>Equation First Train</u>
<u>Equation Second Train</u>
---------> equation 
Substitute the values of 
and 
in the equation
Solve for x
therefore
<u>the answer is</u>
138 short sleve shirts
step 1) add up the ratio of short to long sleve shirts: 3 + 7 = 10
step 2) divide the total # of shirts by 10: 460 / 10 = 46
step 3) because you are finding how many short sleeve shirts are sold, you multiply 46 x 3 = 138 short sleave shirts
Let f(x) be y so you have
y=7x-13
Reverse the signs of x and y so you have
x=7y-13
And then find the value of y
x+13=7y
(x+13)/7=y
And change y to f(x)-1
Answer:
Step-by-step explanation:
plug in 3 for x then simplify
-3(3) - 2
= -9 - 2
= -11
hope this helps <3
