Kate is saving to take an SAT prep course that costs $350. So far, she has saved $180 and can save $17 each week. Write and solve an equation to determine how many more weeks she must save to be able to
afford the course.

10 weeks.

Step-by-step explanation:

Let equal the number of weeks.

Let's construct a linear equation that equals the total cost of the SAT prep course, demonstrates Kate has already saved $180, and represents $17 saved per week:

Let's solve:

Subtract from both sides of the equation.

Divide both sides of the equation by the coefficient of , which is :

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.