Try watching this video https://www.youtube.com/watch?v=epZS4ZYbxFU
6. True_____________ marked price is the price printed on an item.
7. True_____________ percentage profit and loss is calculated as a percentage of the cost price.
8. False_____________ 30% as a decimal is 0.03.
9. True_____________ sales tax is also known as VAT.
10. False____________ the hire purchase price is also known as the down payment.
Answer:
<em>P=7.75t+13</em>
<em>t = 19 weeks</em>
Step-by-step explanation:
<u>Linear Modeling</u>
Some situations can be modeled as linear functions. If we are in a situation where a linear model is suitable, then we need two sample points to make the model and predict future behaviors.
The linear function can be expressed in the slope-intercept format:
y = mx + b
Another equation of the line can be used when two points are given.
The equation of a line passing through points (x1,y1) and (x2,y2) can be written as follows:

The population of beetles is a situation where we must apply linear modeling. Two points are given. For time t=0, the population is P=13. The point is (0,13). For time t=8, P=75. The point is (8,75).
Find the equation of the line:




The explicit formula is:
P = 7.75t + 13
Now we find when the beetle population is 161:
161 = 7.75t + 13
161 - 13 = 7.75t
7.75t = 148
t = 148/7.75
t = 19 weeks
594.15
Step-by-step explanation:
Answer:
$4.34
Step-by-step explanation:
Given the information:
- The original price: $5
- Discount : 20%
- Tax: 8.5%
We can find out the actual price that Diane bought a bunch of balloons that was marked down 20% is:
= the original price (100% - discount rate)
= 5(100% -20%)
= $4
- The tax amount she need to pay is:
= The actual price*tax rate
= $4*8.5%
= $0.34
=> the total cost of the bunch of balloons :
The actual price + tax price
= $4 + $0.34
= $4.34
Hope it will find you well.