Ernie rolph borrowed $6150 at 10% annual simple interest. if exactly 1 year later he was able to repay the loan
without penalty, how much interest would he owe?
ernie will owe $
in interest.

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At his new job, jeremiah can choose an hourly rate of $9 plus a $50 weekly bonus for opening the store, or an hourly rate of $10 per hour with no opening bonus. the equations model his salary options. y = 9x + 50 y = 10x

Three times the sum of a number and seven is negative thirty-six. what is the number?

These tables represent a quadratic function with a vertex at (0, -1). what is the average rate of change for the interval from x = 9 to x = 10?