I NEED 7 AND 8 PLEASE IF YOU CAN I WILL APPRECITE IT ALOT

It costs 4.25 for 1 pound of roast beef. how much will it cost to purchase 2.5 pounds of roast beef? round to nearest cent

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12

Find the equation of a line that is perpendicular to line g that contains (p, q). coordinate plane with line g that passes through the points negative 3 comma 6 and 0 comma 5 3x − y = 3p − q 3x + y = q − 3p x − y = p − q x + y = q − p