0.78/3.51 0.15/84.78

0.08/1.6 13.2/0.3

i need these asap

Which expression is equivalent to (4x^3*y^5)(3x^5*y)^2 \a) 24x^13*y^7b) 36x^13*y^7c) 36x^28*y^7d) 144x^16*y^12

What are the soultion(s) to the quadratic equation 40- x^2=0

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.