What is the largest binary number that can be expressed with 16 bits? what are the equivalent decimal and hexadecimal numbers

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

Which values of p and q result in an equation with exactly one solution? px-43=-42x+q choose all answers that apply: a) p=-43 and q=-43 b) p=42 and q=43 c) p=43 and q=−42 d) p=42 and q=42

Can someone answer this question for me