Which quadratic function best fits this data? y= −11.41x2+154.42x+143.9 y= 11.41x2+154.42x+143.9 y= −11.41x2+154.42x−143.9 y= 11.41x2+154.42x−143.9

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cos of 61.6