Sami was asked to solve the following system of equations using substitution. y=6x -4
y=2x

Here is the work that sami did:

2x = 6x -4
8x = -4
x = -0.5

And then to find y: y= 2 (-0.5) = -1

so Sami's answer for the point of intersection was (-0.5, -1).

Clearly state Sami's one error and then give the correct ordered pair for where the lines cross.

Use the net as an aid to compute the surface area of the triangular prism. a) 550 m2 b) 614 m2 c) 670 m2 d) 790 m2

Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function.a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.

Tatiana wants to give friendship bracelets to her 32 classmates. she already has 5 bracelets, and she can buy more bracelets in packages of 4. write an inequality to determine the number of packages, p, tatiana could buy to have enough bracelets.