Unit Test — Unit test Answers

Marina is solving the equation below by using the multiplicative inverse, or the reciprocal.By which number should Marina multiply both sides of the equation as the first step in solving it?

Layna can paint a 350-square foot room in 4 hours. It takes Bebe 7 hours to paint the same room. Which equation can be used to find the time in hours, t, it takes Layna and Bebe to paint the room together? Rate(Rooms per Hour)Time(Hours)Fraction CompletedLayna Bebe

Leo spent the same amount of time working on each of 5 different weight machines and then spent of an hour on the treadmill. If he spent a total of hours at the gym, which shows the correct equation and solution for x, the number of hours Leo spent at each of the weight machines?

Mary is 63.5 inches tall and her sister Tonya is 70 inches tall. Tonya wants to know how many inches taller she is than Mary. Which equation and solution can be used to solve this problem?

Maggie bought a pound of bananas and 4 boxes of cereal for $10.11. If each box of cereal cost $2.40, what was the price of a pound of bananas?

Ivan finished of his math homework problems and all 3 problems for his science homework before dinner. If he finished a total of 43 problems before dinner, what is the total number of math homework problems he was assigned?

Translate the sentence into an equation.The product of 6 and a number is 108.What is the solution to the equation?

What is the equation that represents the sentence, “Twenty-four is the sum of a number and six.” Use x for the variable.

Which equation requires the multiplication property of equality to be solved?

Write and solve the equation and then check your answer. Which statements are true about the equation and its solution? Check all that apply.A number decreased by thirty-one is fifty-two.

Lian was asked to write an equation and solve this problem. Shonda has some small spoons and 40 large spoons. If she has 68 spoons total, how many small spoons does Shonda have? Lian’s work is shown below. StepsLian’s WorkStep 1Step 2Step 3 In which step, if any, did Lian first make a mistake in her work?

Kendra bought a gallon of milk and of a pound of oranges. If the gallon of milk cost $3.60 and she spent a total of $4.35, which equation can be used to determine x, the cost of a pound of oranges?

What is the first step in determining if 6 is a solution to ?

Millie needs a total of 7.8 feet of ribbon for a school project. She needs 0.7 more feet of ribbon. How much ribbon, in feet, did Millie already have? Write and solve an equation to find the answer.

Jace wrote a sentence as an equation. 56 is 14 more than a number.Which statement best describes Jace’s work?

Two cars raced at a race track. The faster car traveled 20 mph faster than the slower car. In the time that the slower car traveled 165 miles, the faster car traveled 225 miles. If the speeds of the cars remained constant, how fast did the slower car travel during the race? Distance(mi)Rate(mph)Time(h)Slower Car165rFaster Car225r + 20