Evaluate the expression, using the given value of the variable. 2 – 6x + 2x when x = 3 question 9 options: –22 –6 –10 –30 evaluate the expression, using the given value of the variable. z ÷ 3 – 5z + 4(z – 2) when z = 12 question 10 options: –98 –16 –96 –14

The answer would be -10.

Step-by-step explanation:

To solve this, put 3 in for each of the x values and then follow the order of operations.

2 - 6x + 2x

2 - 6(3) + 2(3)

2 - 18 + 6

-16 + 6

-10

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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answers

rauschg

rauschg · hand

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step-by-step explanation:

-3.5 degrees per hour

step-by-step explanation:

find the unit rate:

-12   1/4 degrees           12.25 degrees

= - = -3.5 degrees per hour

      3   1/2 hours               3.5 hours