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Questions in Grade Middle-school

📝 Answered - Suppose that the function [tex]f(x) = 2x + 12[/tex] represents the cost to rent [tex]x[/tex] movies a month from an internet movie club. Makayla now has $10. How many more dollars does Makayla need to rent 7 movies next month?

📝 Answered - Jeff bought a new car for $10,450. He knows this car's value will decrease by 20% each year. Jeff writes the following function to model the cost of his car after \( t \) years: \[ C(t) = 10,450(0.80)^t \] If Jeff plans to sell the car after five years, what will be the value of the car at that time, to the nearest dollar?

📝 Answered - As the value of x increases, which of the following functions would eventually exceed the others? 1) \( f(x) = 1000x \) 2) \( f(x) = 100x^2 \) 3) \( f(x) = 50x^3 \) 4) \( f(x) = 2^x \)

📝 Answered - Given the lengths of three sides of a triangle, which is a right triangle? 1. 10, 26, 24 2. 20, 12, 18 3. 30, 15, 26 4. 40, 50, 80 Also, explain why it is the answer.

📝 Answered - What is the name and location of the state capital of Ohio?

📝 Answered - Write a word problem for the expression 1.75 ÷ 0.5.

📝 Answered - What is the time that is 7 hours and 20 minutes before 2:10 p.m.?

📝 Answered - Select the pair of equations whose graphs are perpendicular. A. \(2y = -3x + 5\) and \(2x + 3y = 4\) B. \(5x - 8y = 9\) and \(12x - 5y = 7\) C. \(y = 2x - 7\) and \(x + 2y = 3\) D. \(x + 6y = 8\) and \(y = 2x - 8\)

📝 Answered - Combine like terms to simplify the expression: \[7x + 3y - 2 + 6x - 1 - y^2\] A. \(-2y^3 + 13x - 3\) B. \(-y^2 + 3y + 13x - 3\) C. \(-y^2 + 3y + 42x^2 - 3\) D. \(-3y^3 + 13x^2 - 3\)

📝 Answered - Evaluate the expression when a = –1.4 and b = –2.7. |a| + b A.–1.3 B.–4.1 C.4.1 D.1.3 Solve for x. A.x = 35 B. 9 2/7 C.x = 63 D. 31 1/2 Graph the solution of the inequality. 14 < 2t + 18 ≤ 20