ElectricPavlov

When Quinn returned home, t =0

  then R = 42 degrees C

From the 7th to the 10th terms is multiplication by r   three times

7 * r * r * r = 21    solve for 'r'

      then the 8th term is  7 * r

Zero is a real number and will result in the smallest value = 8      Every other real number will result in > 8

Area of the square = 2 x 2 = 4 units²

Area within 1 unit of origin is a circle with radius 1          area = pi 1^2

pi / 4   

y = 2+ 4x

2+4x       +        x      =    39

5x = 37

x = 37/5                y =    2 + 4 * 37/5 = 158/5                reduce/simplify as needed.....

3 + 4i - 8 + 2i

= -5 +6i

(-5+6i)^2  =25 -60i + 36i^2

                 = 25 - 36 - 60i               you can finish

78%   represents 80% of the final  course grade

   the final exam represents 20%     the max score on the exam would be 100

78 (.80)    +  100 (.20)  = best final course grade

78(.80) + x (.20)  = 75       solve for 'x' to find score needed on exam to get 75 for the course

See the graph below....

 the trapezoid represents  x + y < 4     area =  7.5

   total double shaded rectangle area = 24

7.5/ 24 = 15/48    = 5/16

Mark down of price, x , means you pay 60%   or  .6x

  an ADDITIONAL 50% off would be   .3x         you pay 30% of original price

Need more info.....what is the question?