you are taking the following test:

Grade: 7,    Subject: Math,    Topic: Variables and Algebraic Expressions
 Question 1: Find the expression that makes the solution table true. 2y2 + 5 + 10 + 10 + 12
 Question 2: Write as an algebraic expression. The sum of y and 10 is 3 more than n. (y + 10) = n + 3 (y + 10) − 3 = n (y + 3) = n + 10 (y + 10) + 3 = n
 Question 3: Write an algebraic expression for the following statement. [Hint: Let y be the first number.] The sum of three consecutive whole numbers. y + 2y + 3y 3y +1 y + (y + 1) + (y + 2) y + y + y
 Question 4: The statement "one-fourth of a number y, decreased by thirty-six" is represented by which of these expressions? 36 − 4y− 36 − 36 36 − Question 5: Evaluate the following algebraic expression for b = 4. 3(2b − 2) + (−b + 1) 33 15 21 12
 Question 6: What value of x will make the following equation true? + 8 = 18 50 25 32 60
 Question 7: Derek made a total of \$130 by selling 5 magazines and 6 coupon books. He sold each coupon book for \$12.50. Which equation can you use to find the cost, c, of each magazine? 5 + c + \$12.50 × 6 = 130 6c + \$12.50 × 5 = 130 5c + \$12.50 × 6 = 130 c + \$12.50 × 6 = 130 − 5c
 Question 8: Write as an algebraic expression. Number of hours in d weeks. 168 + d  168d
 Question 9: The sum of a number y and 3, multiplied by 5 is 30. Find that number. 3 5 6 9
 Question 10: Which equation best represents the data shown in the table? y = x2 + 5 y = −x2 + 3 y = −2x2 − 5 y = −x2 + 5