Which of the following expressions represents the sum of three times a number and eight times a different number?
A. 3x+8y
B. 8x+3x
C. 3x-8y
D. 8x-3y
Let two numbers be x and y. Then
Three time a number=3x
Eight times a different number = 8y
Sum of the two is 3x+8y
Therefore, the Correct Answer is A.
More Questions on TEAS 7 Math
-
Q #1: A recipe calls for 2.5 teaspoons of vanilla. 1 teaspoon equals approximately 4.93 mL. Which of the following is the correct amount of vanilla in mL?
A. 5.33 mL
B. 7.43 mL
C. 12.325 mL
D. 0.507 mL
Answer Explanation
Use the relation 1 teaspoon=4.93 mL to change 2.5 teaspoons to mL. Using the dimension analysis, the amount in mL is found as:
-
Q #2: Elevation above sea level and temperature are negatively-correlated variables. Which of the following statement describes the relationship between the variables?
A. As elevation decreases, temperature remains the same
B. As elevation decreases, temperature decreases
C. As elevation increases, temperature decreases
D. As elevation increases, temperature increases
Answer Explanation
In a negatively-correlated variables, a change in one variable result in opposite change in the other variable. In other words, an increase in on variable results in a decrease in the other.
Now let’s analyze the given scenarios:
As elevation decreases, temperature remains the same this is NO-CORRELATION
As elevation decreases, temperature decreases is a POSITIVE CORRELATION
As elevation increases, temperature decreases is a NEGATIVE CORRELATION
As elevation increases, temperature increases is a POSITIVE CORRELATION
-
Q #3: A leather recliner is on sale for 30% less than its original price. A consumer has a coupon that saves an additional of 25% off of the sale price. If the consumer pays $237 for the recliner, which of the following is the original price of the recliner to the nearest dollar?
A. $316
B. $431
C. $451
D. $527
Answer Explanation
Total percent discount is 30%+25%=55%
So, the percentage of client pays for the recliner is 100%-55%=45%.
The 45% is what represents $237 and the original price is 100%, which is determined as follows:
The original price of the recliner is $526.60 which is approximately $527.
