Four students took a national standardized test for which the mean was 500 and the standard deviation was 100. their scores were 560, 450, 640, and 530. determine the z-value for each student.

For the student who scored 560,zvalue is 0.7257 or 72.57%.

For the student who scored 450, zvalue is 0.3085 or 30.85%.

For the student who scored 640, zvalue is 0.9192 or 91.92%.

For the student who scored 530, zvalue is 0.6179 or 61.79%.

Step-by-step explanation:

if you was gonna solve for a, a is a   < -12

let y equal to

the total fare and x is the mile of taxi ride. so the equation is

y = 0.55x + 1.75

since susie has

$10 to spend for a taxi cab, so he can have

10 = 0.55x +

1.75

x = 15 miles of

taxi ride

so the system of

inequality is

10 < 0.55x +

1.75

x > 2