Question: i need help few problems. question 1: solve-- The cube root of 64a 4 /27b 3 (There is a divide sign also.) 3 64a 4

i need help few problems.

question 1: solve--The cube root of 64a⁴/27b³ (There is a divide sign also.)

³64a⁴/27b³(All is under the radial and it is a cube)

question 2: Regression analysis problem: Determine the correlation coefficient and coefficient of determination for the following data. Interpret the relationship between X and Y.

X: 5 3 6 3 4 4 6 8

Y: 13 15 7 12 13 11 9 5

Regression equation is _______________

Determine the value of Y when X is 7. _____________

question 3: Science problem concerning a rocket.S9t = -16t + 80t + 224 is the function that represent the height of a rocket.In this equation, given the height S, in feet, of a model rocket launched with a velocity of 80 ft/sec from a hill that is 224 feet high, where t is the time in seconds.When will the rocket reach the ground?

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