Answer:
An expression is a number or a combination of numbers and an equation is made up of two expressions connected by an equal sign.
Step-by-step explanation:
4x-6= 22
Move -6 to the other side.
Sign changes from -6 to +6.
4x-6+6= 22+6
4x= 22+6
4x= 28
Divide by 4 for both sides
4x/4= 28/4
x= 7
Answer : x= 7
2b) stretching
2c) it is stretched by a factor of 2 of the parent function f(x)=x
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20:36 simplifies to 10:18 then to 5:6
Answer:
$94.50
Step-by-step explanation:
Total No. of students = Lisa(1) + 17 classmates = 1+17 = 18
Money donated by 1 student = $5.25
Money donated by 18 Students = 18*5.25 = $94.50
