math unit 2 quiz 3
After John worked at a job for 10 years, his salary doubled. If he started at $x, his salary after 10 years is _____.
$2x
Twice a certain number is tripled. The resulting number is _____.
(2x)3
If four times a certain number, increased by 6 is equal to 94, what is the number?
4x + 6 = 94
The sum of three numbers is 69. If the second number is equal to the first diminished by 8, and the third number is 5 times the first. What are the numbers?
69 = 7x - 8
A bus and a car leave from the same city traveling in opposite directions. The bus leaves 2 hours before the car does. The bus travels at a steady speed of 50 mph while the car travels at 70 mph. After how many hours will the bus and car be 800 miles apart?
70(h - 2)
Which of the following could represent consecutive even integers?
x + 1, x + 3
Thomas has $6.35 in dimes and quarters. The number of dimes is three more than three times the number of quarters. How many quarters does he have?
10(3q + 3)
A man walks 10 miles in x hours. How far does he walk in one hour?
10/x miles
The value in cents of 4 quarters and x dimes is _____.
100 + 10x
If Susie is 14, what was her age x years ago?
14 - x
Dwayne's garden is triangle-shaped with two equal sides and a third side that is 4 ft more than the length of an equal side. If the perimeter is 49 ft, how long is each side?
3x + 4 = 49
One side of a square is 3x + 2. Which expression represents the perimeter?
4(3x + 2)
The sum of two numbers is x. If one of the numbers is 12, what is the other?
x - 12
The difference of x and a number is 6. What is the other number?
x - 6
In a triangle, the measure of the second angle is twice the measure of the first angle. The third angle is equal to the sum of the other angles.
x, 2x, 3x