A student’s standardised mark on a class test was z = –1.7. The mean mark for the class is 55 and the standard
deviation is 2.85.
Their mark on the test was closest to
A. 49
B. 50
C. 53
D. 58
E. 60

For what values of b will f(x)= logbx be a decreasing function? (16 )

Abag has more green balls than blue balls, and there is at least one blue ball. let bb represent the number of blue balls and let gg represent the number of green balls. let's compare the expressions 2b2b and b + gb+g. which statement is correct? choose 1

Simplify. 4+3/7x-2-2/7x a. 2-5/7x b. 6-1/7x c. 2+1/7x d. 6+5/7x