A headteacher wants to survey two Year 7 students. There are 100 students in Year 7. How many possible pairs of students can the headteacher pick?

Find the quotient. 50a2 – 98b2 -5a +7b

Consider the function represented by the equation 1/2 j + 1/4 k equals 3 which shows the equation written in function notation with j as the independent variable

Hardest math question of all time can you solve the equation. check for extraneous solutions.9∣9-8x∣ = 2x+3