A student said that the slope of the line through (8,4) and (2,2) is 3. What error could this student have made?

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?

What is the expression in factored form? -20x^2 - 12x a. 4x(5x+3) b. -4x(5x-3) c. -4(5x+3) d. -4x(5x+3)

Shannon drove for 540 minutes. if she traveled 65 miles per hour,how many total miles did she travel?