7. The table shows how the cost of hiring a plumber depends on how long the work takes. What is a rule for the total cost? Give the rule in words and
as an algebraic expression.
Hours
Cost
1
$50
2
S80
3
$110
4
$140
5
$1704
Answer)
the rule in words
the rule as an algebraic
expression
Multiply the number of hours by
and

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.