AHS SS 1 QUIZ 17032023

If the arithmetic mean of 2, 7 and x is 12. What is the value of x?

If the sum of three consecutive even integers is 450, what is the value of the largest of these integers?

If a is equal to b multiplied by c, which of the following is equal to b?

If 25% of 220 equals to 5.5% of w, what is w?

If $$f\left(x\right)=4x^2+2x^4,$$ what is the value of $$f\left(-2\right)$$ ?

If $$5\left(3x-7\right)=20,\ what\ is\ 3x-8$$ ?

If a and b are positive numbers, with $$a^3=3\ and\ a^5=12b^2,\ what\ is\ the\ value\ of\ \frac{a}{b}?$$

What is the value of $$\frac{1+\frac{7}{5}}{1-\frac{5}{7}}?$$

What is the average of $$4y+3\ and\ 2y-1?$$

If $$a=3\left(x-7\right)\ and\ b=3x-7,\ what\ is\ the\ value\ of\ a-b?$$