Luke is building a storage building and needs to have a slab of concrete poured. he knows the contractor charges an initial cost of $95 plus an additional $3.50 per square foot of concrete. which equation can be used to determine the cost (y), in dollars, to pour a concrete slab with an area of x square feet?
a) y = 3.5x + 95
b) y = 9.5x + 3.5
c) y = 95x + 3.5
d) y = 98.5x

A)  

Step-by-step explanation:

Given: The initial cost charged by contractor = $95

The additional cost charged by contractor per square foot of concrete= $3.50

Then the total cost to pour a concrete slab with an area is given by :-

Let x represents the area of concrete slab in square feet.

Then the equation can be used to determine the cost (y), in dollars, to pour a concrete slab with an area of x square feet is given by :-

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )

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step-by-step explanation:

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