Linear Functions MCQ Quiz in বাংলা - Objective Question with Answer for Linear Functions - বিনামূল্যে ডাউনলোড করুন [PDF]

The advertising expenditure is zero when . Solve for :

. Thus, the number of days when the expenditure was zero is , which is not practically possible, indicating an error in calculations or assumptions. The correct mathematical interpretation is option 3.

Given the function , we need to find the increase in when increases by kelvins. The increase in is calculated as . Hence, the increase in degrees Fahrenheit is . Therefore, option 1 is correct. The other options are incorrect as they do not apply the correct multiplication factor to the change in kelvins.

The function is provided, and we need to find such that .

Substitute 27 for :

.

Divide both sides by 3 to solve for :

.

Thus, the value of is 9. Option 3 is correct. Option 1 (7), Option 2 (8), and Option 4 (10) do not satisfy the equation.

The total charge can be represented by the function , where is the number of miles. Substituting gives . Therefore, the total charge is 40 dollars. Option 1 (30) results from only considering the per mile cost. Option 4 (45) might result from miscalculating the multiplication or addition.

The total bill can be calculated using the function , where is the number of minutes. For , . Hence, the total bill is 50 dollars. Option 1 (45) might result from not adding the base fee. Option 3 (60) could be due to an arithmetic error.

To calculate , substitute into . This results in . Hence, the correct answer is 26. Option 3 (30) results from mistakenly adding 2 instead of subtracting. Option 4 (18) could result from miscalculating the multiplication.

To determine the pages read in 7 weeks, substitute into . This gives . Thus, 44 pages can be read in 7 weeks. Option 3 is correct. Other options are incorrect due to calculation errors.

To find , substitute into . This gives . Therefore, is . Option 2 is correct. Other options result from calculation mistakes.

To find the cost for 10 tickets, substitute into the function . This gives . Therefore, the cost for 10 tickets is dollars. Option 2 is correct. The other options are incorrect as they result from different substitutions or miscalculations.

To determine the height of the plant after 8 weeks, substitute into the function . This results in . Thus, the plant's height is inches. Option 4 is correct. Other options are incorrect due to errors in calculations.