The cost of a banquet can be calculated using the function b=75+15n where b represents the total cost and n represents the number of people attending. If the total
cost of the banquet is 130, how many people attended the banquet? (Round to the
nearest whole number)

4 people were attending the banquet

Step-by-step explanation:

1 - Rewrite

b = 75 + 15n; b = 130

2 - Plug in and get n alone

130 = 75 + 15n

- 75  -75

55 = 15n ←↓ Divide both sides by 15

55/15 = n

4

Hope this helps

x= -3

step-by-step explanation:

step 1: simplify brackets

4 - x - 1 = 6

step 2: simpilfy

3 - x = 6

step 3: subtract 3 from both sides

-x = 6 - 3

step 4: simpilfy 6 - 3

-x = 3

step 5: multiply both sides by -1

x = -3

i belive those are the ones that are under 90 degreese.