Amechanic can change the oil and lubricate a car in 20 minutes how many cars can he service in this way in an 8 hour work day

24 cars

Step-by-step explanation:

1 hour = 3 * 20 minutes

which means he can service 3 cars in an hour

for 8 hours:

8 hours * 3 cars = 24 cars

: he can service 24 cars in an 8 hour work day.

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.