Answer:
see explanation
Step-by-step explanation:
Let u = x² ( choice of variable is flexible ), then
4u² - 21u + 20 = 0 ← expressed as a quadratic
This can now be solved for u and converted back into terms of x
Answer:

Step-by-step explanation:
On Friday, there were x students at the baseball game.
On Monday, there were 1/2 as many students, that is: x/2 students
On Wednesday, there were 32 fewer students at the game as there were on Friday, that is x - 32.
Tickets are sold for each student. Therefore, the number of tickets sold on all three days will be the same as the number of students that were at the games on the three days.
The number of students present on the three days is:
x + x/2 + x - 32

The number of tickets sold can therefore be represented by 
Answer:
C - 8
Step-by-step explanation:
Divide both sides by 5
e^x=3.152 take the natural log of both sides...
x=ln(3.152)
x≈1.148
Your total expense would be 35$ because 25+10=35 and then since you are talking about money you add the money sign. Your answer would be 35$