F(x)=x^2+5x-9. Find f(3)

Steps to solve:

f(x) = x^2 + 5x - 9

~Substitute

f(3) = 3^2 + 5(3) - 9

~Simplify

f(3) = 9 + 15 - 9

~Add

f(3) = 24 - 9

~Subtract

f(3) = 15

Best of Luck!

Step-by-step explanation:

f(3) = (3)^2 + 5(3) - 9 = 9 + 15 - 9 = 24 - 9 = 15

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.

pls ask