West B Test Translating English to Algebra 5

Question 1

The total of a number and its double is 33. Which equation represents this?

Accepted Answer

n + 2n = 33

Answer

A number is n, its double is 2n, and their total gives n + 2n = 33.

Question 2

Four times a number is subtracted from 20 to get 8. Which equation is correct?

Accepted Answer

20 - 4n = 8

Answer

'Four times a number subtracted from 20' gives 20 - 4n = 8.

Question 3

A class has 5 more girls than boys. If there are b boys, which expression gives the number of girls?

Accepted Answer

b + 5

Answer

If there are 5 more girls than boys, the number of girls is b + 5.

Question 4

The difference between twice a number and 7 is greater than 13. Which inequality is correct?

Accepted Answer

2n - 7 > 13

Answer

'Twice a number' is 2n, and 'difference between 2n and 7' gives 2n - 7 > 13.

Question 5

A plumber charges $65 per hour and a one-time service fee of $40. The customer pays no more than $300. Which inequality is correct?

Accepted Answer

65h + 40 ≤ 300

Answer

Total cost is 65h + 40, and 'no more than $300' means 65h + 40 ≤ 300.

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