Round each decimal to the underlined place value 78.3169

Which graph represents 2x-5y< 15

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

How many solutions does the nonlinear system of equations graphed bellow have?