Can someone me with a few of these questions

15x, 35x+75y, , 5+c

Step-by-step explanation:

When we have unknown amounts, we use a variable to write a term.

Books cost $6.25 each plus a shipping & handling fee of $8.75 for a total of $15. We use a variable like x to represent how many books we order at $15. So 15x.

We do the same for chairs and sofas. Each chair costs $35 so we write 35x. Each sofa costs $75 so we write 75y. We add together for 35x+75y

We write expressions based on situations or just descriptions. n divided by 7 is and 5 more than c is 5+c.

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.

the correct answer is b. negative exponential growth.

step-by-step explanation:

you can tell it's an exponential function because it decreases rapidly then levels out and never touches the x-axis.

it is negative because the y-axis decreases as the x-axis increases.

therefore it is a negative exponential growth graph.

hope i !