Determine the y intercept (b) of the line 4x+2y+24=0

Select the correct answer and solve for y

Sam opened a money-market account that pays 3% simple interest. he started the account with $7,000 and made no further deposits. when he closed the account, he had earned $420 in interest. how long did he keep his account open?

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25