The algebraic expression for the overtime hours after 6 hours is (6 + y) 30.
<h3>
Algebraic expression</h3>
This is a system for computating mathematical expression using letters or other symbols to represent numbers, with rules for manipulating these symbols.
- Hourly wage for 6 hours = $20 per hour
- Overtime wage after 6 hours = $30 per hour
- Total hours worked = x
x = (Hourly wage for 6 hours × $20 per hour) + (Overtime wage after 6 + y hours × $30 per hour
x = (6 × 20) + (6 + y) 30
x = 120 + 180 + 30y
x = 300 + 30y
The expression for the overtime hours is (6 + y) 30.
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Pretty sure its 3.2.......
He can find the area of the individual shapes the backyard is made up of, then take the sum.
<h3>Area of composite figure</h3>
A composite figure is made up of different shapes and hence their area might be difficult to determine.
In order to determine the area of such a complex shape, the area of the individual shapes is first determined and then sum up. The sum of their areas will give the area of the composite figure
For your neighbour, he can find the area of the individual shapes the backyard is made up of, then take the sum.
Learn more on area of composite figure here: brainly.com/question/21135654
At first, pg means picogram

A microgram is a unit to measure the mass

Then from both relation

Now we can solve the question
Since the average mass per cell is 67.55 pg
Since the number of cells is 10^5
To find the total mass multiply them

We need to change it to microgram, then multiply it by 10^-6

Put a decimal point at the end of the number and move it 6 places to the left to get the answer