Which equation should be used to graph y=sec^-1(x) on a calculator ?

y=1/sec(x)
y=1/cos^-1(x)
y=sec(1/x)
y=cos^-1(1/x)

Given the following statements, which is the best

Beth divided 9 ounces of her granola recipe into 4 equal-sized amounts. she placed the amounts into individual bowls. the fraction 9/4 represents the number of ounces of granola in each bowl. which other number represents the amount of granola beth has in each bowl? (a) 1 1/4 (b) 2 1/4 (c) 1 3/4 (d) 3 3/4 i need !

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with