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Equations and Inequalities

Equations and Inequalities

Equations and Inequalities: Count Formula Wants to Drink Your Variables True or False

1. Solve the formula  for w.
2. If 3y + 2x = 5, find x when y = 3.
3. Solve the formula  for C.
4. Solve the following equation for x:

ax + bx + 3(a - b(x + 1)) = x + 4.

5. The area A of a triangle is given by , where b is the base of the triangle and h is the height of the triangle. One triangle has a base of 10 and a height of 4. A second triangle has a base of 5. The two triangles have the same area. What is the height h of the second triangle?8
6. Solve for y if x = 3y + 2[1 - y - 2(1 - y)].
7. Solve the following equation:

2x + 3π - 2π - 2x = 3(x + π).

8. A rectangle has a perimeter of 20 and a length of 2. What is the width of the rectangle?8
9. The area of the triangle shown below is 24 in2. What is x?

x = 2 in

10. Find the shaded area in the picture below if a = 3 and b = 4.

23


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