exam Maths Puzzle Numerical Ability

f(x)=x2-4

Read Solution (Total 0)

exam Other Question

Using the formula pH = -log[H+], show me how to find the hydrogen ion content of coffee when the pH level is 5.0
Write answer in scientific notation including units. i KNOW THAT THIS IS PROBABLY A SIMPLY ONE BUT iM HAVING A TIME TRYING TO FIGURE HOW TO GET THE CORRECT ANSWER. DMVT math student.

SOLVE FOR B: AX+BY=C. how do you get an answer from this?