Round to the place value of the underlined digit 347,456 4 is underlined

Consider the function f(x)=-5x+3 what is f(-2)

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

Select the correct answer. what is the exact value of sin (157.5°)? a. 'sqrt(2 - sqrt(2))/2 b. *"-"'sqrt(2 + sqrt(2))/29 c.'sqrt(2 + sqrt(2))/4" d. "-"sqrt(2 + sqrt(2))/4)