4 questions help me?? please
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4 questions help me?? please

[From: ] [author: ] [Date: 11-05-25] [Hit: ]
solve the equation c/6 + 25.75 = 90.30 c/6 = 90.30 - 25.75 = 64.55,......

Six friends hire a raft and guide to go white-water rafting in Colorado. Each person also buys a souvenir photo of the trip for $25.75. The total each person pays is $90.30. To find the cost c of the raft and guide, solve the equation c/6 + 25.75 = 90.30

c/6 = 90.30 - 25.75 = 64.55, c = $387.30

A student solved the equation x/4 + 5 = 1 without showing all the work. The student's solution of x = -1 is incorrect. What error did the student make?

the student multiplied x by 4 instead of dividing it by 4, x/4 = 1 - 5 = -4, x = -16 correct ans.

-
5/8(p - 4) = 2
5p/8 - 20/8 = 2
5p/8 = 2 + 20/8
5p = 16 + 20
p = 36/5

1/2(x - 1) = 1/2
x/2 - 1/2 = 1/2
x/2 = 1/2+1/2
x/2 = 1
x = 2

c/6 + 25.75 = 90.30
c/6 = 90.3 - 25.75
c/6 = 64.55
c = 64.55*6
c = 387.3

x/4 + 5 = 1
x/4 = 1-5
x/4 = -4
x = -4*4
x=-16
Student divided instead of multiplied the 4.

-
p= 7.2

x= 0

c= 10.76

And the last problem is a trick, x/4 + 5 = 1 the solution is x= -1
x/4+5=1
X/4=1-5
x/4= -4
x= -1

-
5/8(p - 4) = 2
(p - 4) =16/5
p = 16/5 + 4
p =36/5

1/2(x - 1) = 1/2
(x - 1) = 1
x = 2
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