How to evaluate the expression 10(6-5)-3(9-6)

Aregression was run to determine if there is a relationship between hours of tv watched per day (x) and number of situps a person can do (y). the results of the regression were: y=ax+b a=-0.662 b=30.418 r2=0.703921 r=-0.839

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)

Simplify 24÷(-2)(3)+7 a. -29 b. 3 c. 11