Question

Dirk sold 7 more than 2 times as many gym memberships this month than last month. This month he sold 43 memberships.

Question 1
Part A

Use arithmetic to find the number of memberships Dirk sold last month.

Enter the correct answers in the boxes.

Expression:

memberships

Part B

Use algebra to find the number of memberships Dirk sold last month.

equation:

memberships

Answer 1

18 memberships last month

Answer 2

Answer: 18

Explanation:

x = last month

y = this month

y = 2x + 7

y = 43

43 = 2x + 7

43 - 7 = 2x

36 = 2x

36/2 = x

18 = x <== he sold 18 gym memberships last month