At 3pm, the outside temperature was 4.f. the temperature then fell steadily by 2.fevery hour for the next four hours. what was the temperture at 7pm.

Pls super important solve the botton one

Solve the system of equations. y= 2x y= x^2 - 15

Aswim teacher sells lesson packages. the best deal has the highest ratio of lessons to total cost. swim lesson packagesnumber of lessons total cost$10$4010 1 $8015$80which package is the best deal? l lesson for $105 lessons for $4010 lessons for $8015 lessons for $80mark this and returnsave and exit