Which of the following is a rational number? a) square root of 5

b) square root of 7

c) square root of 58

d) 26/43

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

Which graph corresponds to the function f(x) = x2 + 4x – 1?

An unknown number x is at most 10. which graph best represents all the values of x? number line graph with closed circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the left. number line graph with closed circle on 10 and shading to the left.