Literal Equations — Unit test Answers

Last week, Lindsay earned $10 per hour plus a $60 bonus for good job performance. She spends of her paycheck on dinner with friends. If she had not earned the bonus, the amount she spent on dinner would have been of her paycheck. Which equation can be used to find h, the number of hours Lindsay worked last week?

The amount of potential energy, P, an object has is equal to the product of its mass, m, its height off the ground, h, and the gravitational constant, g. This can be modeled by the equation P = mgh.

Solve the equation.–x + 8 + 3x = x – 6

The sum of the interior angles, s, in an n-sided polygon can be determined using the formula s=180(n−2), where n is the number of sides.Using this formula, how many sides does a polygon have if the sum of the interior angles is 1,260°? Round to the nearest whole number.

The axis of symmetry for a quadratic equation can be found using the formula , where a and b are coefficients in the quadratic equation and x represents the values along a vertical line on the coordinate plane.What is the equation when solved for a?

What is the value of p in the linear equation ?

The formula for the area of a triangle is , where b is the length of the base and h is the height.Find the height of a triangle that has an area of 30 square units and a base measuring 12 units.

Ahmed has five more CDs than one-half the number of CDs Julia has. In this situation, what does c+ 5 represent?

Sianna bought 3 pens, 4 notebooks, and a calculator. The calculator cost $25. If x represents the cost of each pen and y represents the cost of each notebook, which expression represents the amount of change Sianna should receive from $50?

Consider the equation v + 4 + v = 8. What is the resulting equation after the first step in the solution?

Which equation can be used to represent "six added to twice the sum of a number and four is equal to one-half of the difference of three and the number”?

Jill simplified the expression shown.4x – 2y – x + 5y – 8What is the coefficient of the x-term of the fully simplified expression?

Solve the equation.2x − 3 + 4x = 21

Bianca wrote the steps for her solution to the equation 2.3 + 8(1.3x – 4.75) = 629.9. She left out the description for the last step.What is the missing step of her solution?

Sara wants to find the input value that produces the same output for the functions represented by the tables.