Maths & English Quiz

If 2x+1=5, what is the value of 8x+4?

What is the value of x?

7-3x=28

2(3x+1)-(9-2x)=25

What value of x satisfies the equation above?

If 3(r+300)=6, then what is the value of r+300-2 ?

41 =12d-7

What is the value of d in the equation shown?

7>2x-3

What values of x satisfy the inequality?

3ab-1=2ab-3

Given the equation, what is the value of ab?

Tamika purchases a new mattress for $600, which she will pay for with an initial payment of $150 and monthly installments of $30. Which of the following equations can be used to find the number of monthly installments, m, required to complete the purchase, assuming there are no taxes or fees?

0.10x + 0.20y = 0.12(x + y)

Lawrence will mix x milliliters of a 10% by mass saline solution with y milliliters of a 20% by mass saline solution in order to create a 12% by mass saline solution. The equation above represents this situation. If Lawrence uses 100 milliliters of the 20% by mass saline solution, how many milliliters of the 10% by mass saline solution must he use?