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TAKS Practice Test (problems: 1 - 20)
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Practice Test Problem List
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Problem 1
Mr. Zeta invested $3000 in a savings account at an annual rate of 5%, and another amount, $x, in a stock fund which earned 7% in the first year.
Which equation describes y, the total amount of interest earned from both investments during the first year?
Problem 2
A political rally is organized by a group of 100 people. In addition to this core group, a number of buses bring people from outlying areas to attend to the rally. Each bus has 30 seats, and does not travel unless it is full. The number of people at the rally can be expressed by the function
,
where c is the number of buses.
Which is the dependent quantity in this functional relationship?
Problem 6
In 2006, the population of Thailand was about 15,000,000 less than half the population of Brazil. If x represents the population of Brazil, which expression can be used to determine the population of Thailand?
Problem 10
Which function represents the line that contains the point (3, –2) and has a slope of –6?
Problem 11
The line represented by the equation 
is graphed below.
Which of the following best describes the effect on the graph when the slope is halved?
Problem 13
The amount of plastic waste generated in the United States varies directly with the number of people who produce it. In 2002, it was estimated that on average, every 90 Americans used 10 tons of plastic. How much plastic was used by the entire population of 288,000,000 Americans that year?
Problem 14
Boris took 
hour to ride his bicycle from home to work. He rode an average of 15 miles per hour on a bike path until he got to the downtown area, where traffic slowed him down to 3 miles per hour.
If x is the number of hours Boris rode on the bike path, which equation can be used to find y, the number of miles from his home to his workplace?
Problem 15
The temperature in Celsius can be found from the temperature in Fahrenheit using the formula
If the temperature in Laredo on a particular day varied from 59
F to 86F, then the temperature in Celsius varied from—
Problem 16
At a snack shop, Rhonda wants to sell a trail mix using x pounds of assorted nuts and y pounds of dried berries. The assorted nuts sell for $4.50 per pound and the dried berries sell for $6.00 per pound. If she wants to make 50 pounds of the mixture and sell it for $5.50 per pound, which system of equations can she use to find the number of pounds of each ingredient to use?
Problem 17
The equations of two lines are
Which of the following describes their point of intersection?
when the equation is changed to y = 3x2?
