Answer:
The linear model of her monthly earnings is; Y =1200 +0.03*X. The amount earned is 1350; choice A
Step-by-step explanation:
Let Y denote her monthly earnings and X her total sales. The linear model can thus be formulated as; Y =1200 +0.03*X. We are then to find the value of Y given X =5000. We simply substitute X =5000 into the linear model which yields; Y =1350
Answer:
$1770 for 25 hours
Step-by-step explanation:
600 × 225 = 135000
135000 ÷ 90 = 1500 min
1500min=25 hours
$2.95×600= $1770
Answer:
78.6km/h
Step-by-step explanation:
<em><u>Speed=distance÷time</u></em>
<u>distance</u>=21km
<u>time</u>=16 minutes<u>(convert into hour by dividing it</u> <u>with 60)</u>
=16÷60=0.267
Speed=21÷0.267=78.65km/h
![speed = \frac{distance }{time}](https://tex.z-dn.net/?f=speed%20%3D%20%20%5Cfrac%7Bdistance%20%7D%7Btime%7D%20)
![speed = \frac{21}{0.267} = 78.6km(h](https://tex.z-dn.net/?f=speed%20%3D%20%20%5Cfrac%7B21%7D%7B0.267%7D%20%20%3D%2078.6km%28h)
Would you not just multiply all of the following numbers to get a total of 160?