What is 51/2 × 21/3?
a. 132/5
b. 127/8
c. 131/6
d. 125/6
student b
incorrect

Ineed me i stuck and i don’t want to get it wrong

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2

Robin spent 25% more time on his research project than he had planned he’s been an extra h ours on the project which of the following expressions could represent the number of hours rob actually spent on the project