A. Translate the following English phrases to Mathematical phrases.

1. Four times a certain number decreased by one

2. One subtracted from four added to a number

3. Twice a number more than thirty-eight.

4. The sum of five and a number is less than or equal to fifty.

5. The product of eleven and a number increased by the

quotient of thrice a number and six​

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.

we are given scale of 2 units.

on graph paper the space is 2.5 cm.

length of glass = 8 units.

8 units = 2 units +2 units +2 units +2 units.

each 2 unit is = 2.5cm.

therefore,

8 units = 2 units +2 units +2 units +2 units = 2.5+2.5+2.5+2.5= 10cm.