Kate is saving to take an sat prep course that cost $350. so far, she has saved $180, and she adds $17 to her savings each week, how many more weeks must she save to be able to afford the course(show work)

10 weeks

Step-by-step explanation:

SAT prep course costs = $350

Kate has saved = $180

She adds to her savings each week = $17

Let the number of weeks to save enough money = x

180 + (17x) = 350

17x = 350 - 180

17x = 170

x =  

x = 10 weeks

It takes 10 weeks to save enough money to be able to afford the course.

b.) 160 miles on a 5 gallons car

step-by-step explanation:

240/10=24 miles/gallon

160/5=32 miles/gallon

30/1=30 miles/gallon

168/6= 28 miles/gallon

32 miles/gallon is the most amount, so this is the best.

f(x) = x^3 -2x^2 -3x

x( x^2 -2x-3)

x( x^2 +x -3x -3)

x( x(x+1) -3(x+1))

x( x-3)( x+1)

so zeroes are 0, 3,-1

its (2) option