The graph below shows the cost, in dollars, per notebook at the school store. Notebook Costs
14
12
10
8
Cost (in dollars)
0
1 2 3 4 5 6
Number of Notebooks
Which equation represents the total cost, t, per n notebooks?
A
n = 21
B
n = 2.40
C
[= 2.4n
D
{ = 0.42n

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

Sarah used her calculator to find sin 125 degrees. she wrote down sin sin125 degrees.57. how could sarah recognize that her answer is incorrect?

Anumber cube is rolled two times in a row. find the probability it will land on 2 on the first roll and a number greater then 4 on the second roll